(fog)(-1) = f( g(-1) )
So the first step is to figure out g(-1) and then use that in f(x).
g(-1) = 4(-1) + 1
= -3
f(-3) = 2(-3)^2 -4(-3) + 9
= 2(9) + 12 + 9
= 39
So, (f o g)(-1) = f(g(-1)) = f(-3) = 39
#
f(x) = x
f(x) = 3
5
6
f(x)=3-x
f(x) = 1
Domain
3
0
x=2
2
f(x) = 2
Function Equation
f(x) = 5-x
f(x) = x is a simple linear function with a slope of 1, f(x) = 3 5 6 is a constant function, f(x) = 3-x is a linear function with a negative slope of -1, f(x) = 1 is a constant function, f(x) = 2 is a constant function
What is a constant function?A constant function is a mathematical function whose output value is the same for every input value
From the given parameters, f(x) = x is a simple linear function with a slope of 1, this implies that for every unit increase in x, the value of y increases by 1.
Also, f(x) = 3 5 6 is a constant function, where the value of y is always 3 5 6, regardless of the value of x.
In the same way, f(x) = 3-x is a linear function with a negative slope of -1, which means that for every unit increase in x, the value of y decreases by 1. The fourth function f(x) = 1 is a constant function, where the value of y is always 1, regardless of the value of x.
The domain of the fifth function is 3 0, which means that x can take any value between 3 and 0.
The sixth function f(x) = 2 is a constant function, where the value of y is always 2, regardless of the value of x.
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A. 8/17
B. 15/17
C. 8/15
D. 15/8
Answer:
C
Step-by-step explanation:
Tangent of an angle is the opposite side over the adjacent side.
Tangent of angle beta is 8/15
What the is the y-intercept of this equation: 4x = 2y +6
According to a Gallup poll, it is reported that 81% of Americans donated money to charitable organizations in 2021. If a researcher here to take a random sample of 6 Americans, what is the probability that: a. Exactly 5 of them donated money to a charitable cause?
b. Less than 2 of them donated money to a charitable cause? c. No more than 5 of them donated money to a charitable cause?
(a) The probability that exactly 5 of the 6 Americans donated money to a charitable cause ≈ 0.2787.
(b) The probability that less than 2 of the 6 Americans donated money to a charitable cause ≈ 0.0225
(c) The probability that no more than 5 of the 6 Americans donated money to a charitable cause is approximately 0.7772.
To solve these probability problems, we can use the binomial probability formula.
In this case, the probability of success (p) is 0.81 (since 81% of Americans donated money), and the sample size (n) is 6.
a. To obtain the probability that exactly 5 of them donated money to a charitable cause, we can use the binomial probability formula:
P(X = 5) = (n choose k) * p^k * (1 - p)^(n - k)
P(X = 5) = (6 choose 5) * 0.81^5 * (1 - 0.81)^(6 - 5)
P(X = 5) = 6 * 0.81^5 * 0.19^1
P(X = 5) ≈ 0.2787
Therefore, the probability that exactly 5 of the 6 Americans donated money to a charitable cause is approximately 0.2787.
b. To obtain the probability that less than 2 of them donated money to a charitable cause, we can calculate the probabilities of 0 and 1 successes and add them together:
P(X < 2) = P(X = 0) + P(X = 1)
P(X < 2) = (6 choose 0) * 0.81^0 * (1 - 0.81)^(6 - 0) + (6 choose 1) * 0.81^1 * (1 - 0.81)^(6 - 1)
P(X < 2) = 0.19^6 + 6 * 0.81 * 0.19^5
P(X < 2) ≈ 0.0006 + 0.0219
P(X < 2) ≈ 0.0225
Therefore, the probability that less than 2 of the 6 Americans donated money to a charitable cause is approximately 0.0225.
c. To obtain the probability that no more than 5 of them donated money to a charitable cause, we can calculate the probabilities of 0, 1, 2, 3, 4, and 5 successes and add them together:
P(X ≤ 5) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5)
P(X ≤ 5) = (6 choose 0) * 0.81^0 * (1 - 0.81)^(6 - 0) + (6 choose 1) * 0.81^1 * (1 - 0.81)^(6 - 1) + (6 choose 2) * 0.81^2 * (1 - 0.81)^(6 - 2) + (6 choose 3) * 0.81^3 * (1 - 0.81)^(6 - 3) + (6 choose 4) * 0.81^4 * (1 - 0.81)^(6 - 4) + (6 choose 5) * 0.81^5 * (1 - 0.81)^(6 - 5)
P(X ≤ 5) ≈ 0.19^6 + 6 * 0.81 * 0.19^5 + 15 * 0.81^2 * 0.19^4 + 20 * 0.81^3 * 0.19^3 + 15 * 0.81^4 * 0.19^2 + 6 * 0.81^5 * 0.19^1
P(X ≤ 5) ≈ 0.0006 + 0.0219 + 0.0979 + 0.2095 + 0.2387 + 0.2086
P(X ≤ 5) ≈ 0.7772
Therefore probability that no more than 5 of the 6 Americans donated money to a charitable cause is approximately 0.7772.
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PLEASE HELP I WILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!
Use mathematical induction to prove that 1 + 2 + 3 + … + n = (1/2) n (a1 + an).
Use the result to find the sum of 1 + 2 + 3 + ... + 500.
Answer:
See below for proof.
\(S_{500}=125250\)
Step-by-step explanation:
Given arithmetic series:
1 + 2 + 3 + … + nTherefore:
\(S_n=1+2+3+...+(n-2)+(n-1)+n\)
\(S_n=1+(1+1)+(1+2)+...+(1+n-3)+(1+n-2)+(1+n-1)\)
\(S_n=1+(1+1)+(1+2(1))+...+(1+(n-3)(1))+(1+(n-2)(1))+(1+(n-1)(1))\)
Let:
a = first term = 1d = common difference = 1n = nth termTherefore:
\(S_n=a+(a+d)+(a+2d)+...+(a+(n-3)d)+(a+(n-2)d)+(a+(n-1)d)\)
Reverse the order:
\(S_n=(a+(n-1)d)+(a+(n-2)d)+(a+(n-3)d)+...+(a+2d)+(a+d)+a\)
Add the two expressions for Sₙ:
\(2S_n=(2a+(n-1)d)+(2a+(n-1)d)+(2a+(n-1)d)+...+(2a+(n-1)d)\)
Therefore, the term (2a + (n – 1)d) has been repeated n times:
\(2S_n=n(2a+(n-1)d)\)
Divide both sides by 2:
\(S_n=\dfrac{1}{2}n(2a+(n-1)d)\)
\(S_n=\dfrac{1}{2}n(a+a+(n-1)d)\)
Replace a with a₁ (first term) and a + (n – 1)d with aₙ (last term):
\(S_n=\dfrac{1}{2}n(a_1+a_n)\)
To find the sum of the series 1 + 2 + 3 + ... + 500, substitute the following values into the formula:
a₁ = 1aₙ = 500n = 500Therefore:
\(\implies S_{500}=\dfrac{1}{2}(500)(1+500)\)
\(\implies S_{500}=250(501)\)
\(\implies S_{500}=125250\)
f(x) = 8 – 3x
Evaluate f(9)
The Kent family must pay $2,868 in property tax on their home this year. Their house payment is $755
per month. What is their payment each month with the tax? Assume that the tax is paid in equal
monthly instauments.
Their payment with tax is $ per month
.-La familia Juárez es parte de nuestra comunidad educativa, tiene cuatro integrantes; la mama se dedica al comercio y gana S/1000 mensuales, el papa gana semanalmente S/400. Y gastan de la siguiente manera: atentación S/250 por persona; vestimenta S/40 por persona; en servicios de agua y luz S/30 y S/100, respectivamente; paquete de teléfono, internet y cable S/120; gas S/40; alimentación para gallinas S/15 cada mes e higiene personal S/ 20 por persona. Además, en esta situación de pandemia compran cada mes un Kit de Bioseguridad compuesto por: 4 mascarillas de tela, a S/10 cada una; 4 litros de alcohol, a S/8 cada uno, y 3 litros de lejía, a S/5 cada uno. ¿Cuál será el presupuesto mensual de la familia si además recibe S/10 por venta de una docena de huevos? ¿A cuánto asciende el gasto mensual por persona?
Answer:
a) 201s / 1000
b) 7s / 125 + s / 10 + 7s / 5 + s / 30 + s / 2
Step-by-step explanation:
Total de miembros de la familia = 4
Ganancia de la madre = s / 1000 por mes
Ganancia del papa = s / 40 por semana
Ganancia por venta de huevos = s / 10
Ganancia total por mes = s / 1000 + s / 40 * 4 + s / 10 = s / 1000 + s / 10 + s / 10 = 201s / 1000
Gasto-
Servicio - S / 250 * 4 = 4s / 250
ropa - 4S / 40
servicios de agua - 4S / 30
Electricidad - 4S / 100
paquete de teléfono, internet y cable - S / 120
gas - S / 40
alimento para pollos - S / 15 cada mes
higiene personal 4S / 20
4 mascarillas de tela - 4S / 10
4 litros de alcohol - 4 S / 8
3 litros de lejía - 3S / 5
Gastos totales = 2s / 125 + s / 10 + 2s / 15 + s / 25 + s / 120 + s / 40 + s / 15 + s / 5 + 2s / 5 + s / 2 + 3S / 5
Gasto total = 7s / 125 + s / 10 + 7s / 5 + s / 30 + s / 2
find the distance between the given parallel planes. 2x − 5y z = 4, 4x − 10y 2z = 2
The distance between two parallel planes is given by the absolute value of the difference between the constant terms in their equations divided by the square root of the sum of the squares of the coefficients of x, y, and z.
In this case, the constant term in the equation 2x − 5y + z = 4 is 4, and the constant term in the equation 4x − 10y − 2z = 2 is 2. Therefore, the absolute value of their difference is |4 - 2| = 2. The coefficients of x, y, and z in the two equations are 2, -5, 1 and 4, -10, -2, respectively. The sum of the squares of these coefficients is 30 + 41 = 71. Therefore, the distance between the two planes is 2/√71.
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For the function below find a) the critical numbers; b) the open intervals where the function is increasing, and c) the open intervals where it is decreasing f(x)=8x³-42x-48x + 4 a) Find the critical number(s). Select the correct choice below and, if necessary fill in the answer box to complete your choice. A. The critical number(s) is/are (Type an integer or a simplified fraction. Use a comma to separate answers as needed
A) Function is increasing on (-∞, -1) and (7/2, ∞), and decreasing on (-1, 7/2).
b) The local minimum value of f is; 5608/2197 at x = -42/13, and the local maximum value of f is 139/8 at x = 7/2.
(a) To determine the intervals on which f is increasing or decreasing, we need to determine the critical points and then check the sign of the derivative on the intervals between them.
f(x)=8x³-42x-48x + 4
f'(x) = 24x² - 90
Setting f'(x) = 0, we get
24x² - 90 = 0
24x² = 90
x =± √3.75
So, the critical points are;
x = -1 and x = 7/2.
We can test the sign of f'(x) on the intervals as; (-∞, -1), (-1, 7/2), and (7/2, ∞).
f'(-2) = 72 > 0, so f is increasing on (-∞, -1).
f'(-1/2) = -25 < 0, so f is decreasing on (-1, 7/2).
f'(4) = 72 > 0, so f is increasing on (7/2, ∞).
Therefore, f is increasing on (-∞, -1) and (7/2, ∞), and decreasing on (-1, 7/2).
(b) To determine the local maximum and minimum values of f, we need to look at the critical points and the endpoints of the interval (-1, 7/2).
f(-1) = -49
f(7/2) = 139/8
f(-42/13) = 5608/2197
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Which angles are Corresponding and what is true about them?*
9 and 14; they're supplementary
13 and 4; they're congruent
14 and 10, they're congruent
3 and 6; they're supplementary
Answer:
all above, 9 and 14 ....
Step-by-step explanation:
Search up what corresponding means
Which equations are true for the values of x, y, and z? Select three options.
x + 65 = 180
x = z
y = 65
x = 65
x + y +z = 115
Answer:x+65=180 / x+y+z=115
Step-by-step explanation:
According to the diagram, point B lies on how many faces of the pyramid? three one two four
Answer:
it lies on 4 faces hope it helps
Answer:
The answer is four.
Step-by-step explanation:
Which expression is equivalent to
Answer:
B
Step-by-step explanation:
A large pool has a faucet to allow water to enter the pool and a drain to allow water to leave the pool.
Each minute, the faucet allows 10 3/4 gallons of water to enter the pool, and the drain allows 12 1/3 gallons to leave the pool.
What is the change in the amount of water in the pool after 112 minutes?
Enter your answer as a simplified mixed number by filling in the boxes.
The change in the amount of water in the pool is the difference between the amount of water that enters and leaves the pool
Change in volume of water in the pool after 112 minutes is \(\underline{-117\frac{1}{3}}\) gallons
Reason:
The given parameters are;
The volume volume of entering the pool = 10 3/4 gallons per minute
The volume of water leaving the pool = 12 1/3 gallons per minute
Required:
The change in the amount of water in the pool after 112 minute
Solution:
The volume of water, V₁, that enters the pool in 112 minute is given as follows;
V₁ = 10 3/4 × 112 = 1,204The volume of water, that enters the pool, V₁ = 1,204 gallons
The volume of water, V₂, that leaves the pool in 112 minute is given as follows;
V₂ = 12 1/3 × 112 = 1,381\(.\overline 3\)The volume of water, that that leaves the pool, V₂ = 1,381\(.\overline 3\) gallons
The change in the amount of water in the pool after 112 minutes, ΔV, is given as follows;
ΔV = V₁ - V₂
ΔV = 1,204 - 1,381\(.\overline 3\) = -177\(.\overline 3\) = -(117 1/3)Change in volume of water in the pool after 112 minutes, ΔV = \(\underline{-117\frac{1}{3}}\) gallons
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Consider what you know about the sampling distribution of the sample proportion. This sampling distribution: a. will become more variable as the sample size increases.b. will be Normal in shape only if the sample size is at least 100. c. will have a center equal to the population proportion, or pd. has a shape that is skewed to the right, regardless of sample size. e. is a collection of the parameters of all possible samples of a particular size taken from a particular population
The sample distribution is a collection of the parameters of all possible samples of a particular size taken from a particular population. The correct answer is option E.
What does sample distribution mean?A sampling distribution refers to a probability distribution of a statistic which comes from selecting random samples of a given population. Also known as a finite-sample distribution, it represents the distribution of frequencies on how spread apart various outcomes will be for a specific population.
As sample sizes increase, the sampling distributions approach a normal distribution. With infinite numbers of successive random samples, the mean of the sampling distribution is equal to the population mean (µ). The mean of the sampling distribution of a sample proportion is np, the sample size times the probability of success for each trial (or observation).
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The cross section of a regular pyramid contains the altitude of the pyramid. The shape of this cross section is a 1. circle 2. square 3. triangle 4. rectangle
Answer:
triangle
Step-by-step explanation:
The cross section must be a vertical cross section that includes the vertex of the pyramid.
Answer: triangle
Will give Brainly
Find the probability that a
randomly
selected point within the circle falls
in the red shaded area.
60°
60°
r= 4 cm
[? ]%
Round to the nearest tenth of a percent.
Answer:
mate....where is red shaded region....
probably this will help ..... ;)
find the probability that a randomly selected point within the circle falls in the red shaded area
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3. Roll the die on the game 8 times and record which car would move. What is the empirical probability of how many times the red car moves in 8 rolls
The empirical probability of the red car moving a specific number of times in 8 rolls of the die can be estimated by rolling the die many times and counting the number of times the red car moves a specific number of times, then dividing this count by the total number of rolls.
Assuming that the probability of the red car moving is independent and equal for each roll, the number of times the red car moves in 8 rolls can be modeled using a binomial distribution.
Let's say that the probability of the red car moving in a single roll is p, and we want to find the empirical probability of the red car moving k times in 8 rolls.
To find the empirical probability, we would need to roll the die 8 times and record how many times the red car moves. We can repeat this process many times to collect a large sample of outcomes and estimate the probability based on the proportion of times the red car moves k times in 8 rolls.
For example, if we roll the die 8 times and observe that the red car moves 4 times, we would record that as 4 occurrences of the red car moving in 8 rolls. We can repeat this process many times and record the number of occurrences for each possible value of k (from 0 to 8).
Then, we can calculate the empirical probability of the red car moving k times in 8 rolls as:
The empirical probability of k red car moves = (number of occurrences of k red car moves) ÷ (total number of trials)
For each value of k, we would calculate this empirical probability based on the collected sample.
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Form an expression for the sum of three consecutive odd integers if the smallest number is x.
(difference between consecutive odd integers is 2)
Answer:
3x + 6.
Step-by-step explanation:
That would be x + x +2 + x + 4
= 3x + 6.
Verify this by adding 7 9 and 11:
7 + 9 + 11 = 27
3(7) + 6 = 21 + 6 = 27.
Determine if the triangles are similar. If they are, identify the triangle similarity theorem(s) that prove(s) the similarity.
A. This question cannot be answered without a diagram.
B. This question cannot be answered without additional information.
C. The triangles are similar by the AA (Angle-Angle) theorem.
D. The triangles are similar by the SAS (Side-Angle-Side) theorem.
The answer to whether or not the triangles are similar depends on the given information, so it could be either option C or D.
If the given information includes the measures of two angles of each triangle, and the two pairs of angles are congruent, then we can conclude that the triangles are similar by the AA theorem. On the other hand, if the given information includes the measures of two sides and the included angle of each triangle, and the two pairs of sides are proportional and the included angles are congruent, then we can conclude that the triangles are similar by the SAS theorem.
If the question includes a diagram or gives information about the measures of angles or sides, we can apply the triangle similarity theorems to determine if the triangles are similar. However, if there is not enough information provided, then we cannot definitively determine if the triangles are similar and options A or B would be correct. It is important to note that there are other similarity theorems that can be used to prove similarity, such as the SSS (Side-Side-Side) theorem and the AAA (Angle-Angle-Angle) theorem, but these theorems are not applicable in all cases. It is also important to remember that similarity does not imply congruence, as similar figures have the same shape but not necessarily the same size.
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Evaluate the function rule for the given value. Y=12×3^x for x=-2
Answer:
Y = 4/3
Step-by-step explanation:
Solve for Y:
3 Y = 4
Hint: | Divide both sides by a constant to simplify the equation.
Divide both sides of 3 Y = 4 by 3:
(3 Y)/3 = 4/3
Hint: | Any nonzero number divided by itself is one.
3/3 = 1:
Answer: Y = 4/3
For purposes of making on-campus housing assignments, a college classifies its students as Priority A (seniors), Priority B (juniors), and Priority C (freshmen and sophomores). Of the students who choose to live on campus, 22% are seniors, 29% are juniors, and the rest are underclassmen. The most desirable dorm is the newly constructed Gold dorm, and 71% of the seniors elect to live there. 19% of the juniors also live there, along with only 5% of the freshmen and sophomores. What is the probability that a randomly selected resident of the Gold dorm is a senior? Show as much work as possible.
Answer:
The probability that a randomly selected resident of the Gold dorm is a senior is 0.1562
Step-by-step explanation:
The given percentage of each class of student is presented as follows;
Priority A (seniors) = 22%, ∴ P(s) = 0.22
Priority B (juniors) = 29%, ∴ P(j) = 0.29
Priority C (freshmen and sophomores) = (100 - 22 - 29)% = 49%, ∴ P(fs) = 0.49
The percentage of the seniors that elect to live at the Gold dorm, = 71%, ∴ P(sG) = 0.71
The percentage of the juniors that live at the Gold dorm = 19%, ∴ P(jG) = 0.19
The percentage of the freshmen and sophomores that live in the Gold dorm = 5%, ∴ P(fsG) = 0.05
The probability that a randomly selected resident of the Gold dorm is a senior = P(s∩sG) = P(s) × P(sG)
∴ P(s∩sG) = 0.22 × 0.71 = 0.1562
Therefore;
The probability that a randomly selected resident of the Gold dorm is a senior = P(s∩sG) = 0.1562.
Learning Task 1 4/625 11. 796 A. Simplify the radical expressions 1. V63 6. V24 2. 48 7. 781 3. 775 8. V128 4. 99 9. 340 5. 92 12. 128 13. 4/243 14. V3000 10. V135 15.
Question:
Simplify the radical expressions
\(1.\ \sqrt{63\) \(2.\ \sqrt{48\) \(3.\ \sqrt{75\) \(4.\ \sqrt{99\) \(5.\ \sqrt{92\)
\(6.\ \sqrt[3]{24}\) \(7.\ \sqrt[3]{81}\) \(8.\ \sqrt{128}\) \(9.\sqrt[3]{40}\) \(10.\ \sqrt[3]{135}\)
Answer:
\(\sqrt{63}= 3 \sqrt7\)
\(\sqrt{48} = 4\sqrt{3}\)
\(\sqrt{75} = 5\sqrt{3}\)
\(\sqrt{99} = 3 \sqrt{11\)
\(\sqrt{92} = 2\sqrt{23\)
\(\sqrt[3]{24} = 2 \sqrt[3]{3}\)
\(\sqrt[3]{81} =3\sqrt[3]{3}\)
\(\sqrt{128} = 8 \sqrt{2}\)
\(\sqrt[3]{40} = 2 \sqrt[3]{5}\)
\(\sqrt[3]{135} =3\sqrt[3]{5}\)
Step-by-step explanation:
\(1.\ \sqrt{63\)
Express 63 as 9 * 7
\(\sqrt{63}= \sqrt{9 * 7\)
Split:
\(\sqrt{63}= \sqrt{9} * \sqrt7\)
\(\sqrt{63}= 3 * \sqrt7\)
\(\sqrt{63}= 3 \sqrt7\)
\(2.\ \sqrt{48\)
Express 48 as 16 * 3
\(\sqrt{48} = \sqrt{16*3}\)
Split
\(\sqrt{48} = \sqrt{16}*\sqrt{3}\)
\(\sqrt{48} = 4*\sqrt{3}\)
\(\sqrt{48} = 4\sqrt{3}\)
\(3.\ \sqrt{75\)
Express 75 as 25 * 3
\(\sqrt{75} = \sqrt{25*3}\)
Split
\(\sqrt{75} = \sqrt{25}*\sqrt{3}\)
\(\sqrt{75} = 5\sqrt{3}\)
\(4.\ \sqrt{99\)
Express 99 as 9 * 11
\(\sqrt{99} = \sqrt{9} * \sqrt{11}\)
Split
\(\sqrt{99} = 3 \sqrt{11\)
\(5.\ \sqrt{92\)
Express 92 as 4 * 23
\(\sqrt{92} = \sqrt{4} * \sqrt{23\)
\(\sqrt{92} = 2* \sqrt{23\)
\(\sqrt{92} = 2\sqrt{23\)
\(6.\ \sqrt[3]{24}\)
Express 24 as 8 * 3
\(\sqrt[3]{24} = \sqrt[3]{8} * \sqrt[3]{3}\)
Express 8 as 2^3
\(\sqrt[3]{24} = \sqrt[3]{2^3} * \sqrt[3]{3}\)
\(\sqrt[3]{24} = 2 \sqrt[3]{3}\)
\(7.\ \sqrt[3]{81}\)
Express 81 as 27 * 3
\(\sqrt[3]{81} =\sqrt[3]{27}*\sqrt[3]{3}\)
Express 27 as 3^3
\(\sqrt[3]{81} =\sqrt[3]{3^3}*\sqrt[3]{3}\)
\(\sqrt[3]{81} =3\sqrt[3]{3}\)
\(8.\ \sqrt{128}\)
Express 128 as 64 * 2
\(\sqrt{128} = \sqrt{64} * \sqrt{2}\)
\(\sqrt{128} = 8 \sqrt{2}\)
\(9.\sqrt[3]{40}\)
Express 40 as 8 * 5
\(\sqrt[3]{40} = \sqrt[3]{8} * \sqrt[3]{5}\)
\(\sqrt[3]{40} = \sqrt[3]{2^3} * \sqrt[3]{5}\)
\(\sqrt[3]{40} = 2 \sqrt[3]{5}\)
\(10.\ \sqrt[3]{135}\)
Express 135 as 27 * 5
\(\sqrt[3]{135} =\sqrt[3]{27}*\sqrt[3]{5}\)
Express 27 as 3^3
\(\sqrt[3]{135} =\sqrt[3]{27}*\sqrt[3]{5}\)
\(\sqrt[3]{135} =3\sqrt[3]{5}\)
Right answer gets brainlist
3 positive 1 positive
Step-by-step explanation:
D goes 3 units right and it get to 3 Positive and then two units down gets you to 3 Positive and 1 Positive 3,1
Define the dummy random variable which takes on the value 1 when the number on first dice is either 1,2 or 3 and takes on the value 0 otherwise. Define a second dummy random variable which takes on the value 1 when the number on the second dice is either 3, 4, 5 or 6 and takes on the value of 0 otherwise. and are independent. True or false
True, the joint probability of Y1 and Y2 taking on the value 1 simultaneously is 1/3.
The first dummy random variable is defined as follows:
Let X be the random variable representing the number on the first dice. Then, the dummy random variable Y1 is defined as:
Y1 = 1 if X is either 1, 2, or 3
Y1 = 0 otherwise
Similarly, the second dummy random variable is defined as:
Let Z be the random variable representing the number on the second dice. Then, the dummy random variable Y2 is defined as:
Y2 = 1 if Z is either 3, 4, 5, or 6
Y2 = 0 otherwise
Since Y1 and Y2 are independent, their joint probability distribution can be computed by multiplying their marginal probabilities.
P(Y1=1, Y2=1) = P(Y1=1) * P(Y2=1)
To compute P(Y1=1), we need to find the probability that X is either 1, 2, or 3. Since each face of a fair dice has an equal probability of appearing, we have:
P(X=1) = P(X=2) = P(X=3) = 1/6
Therefore,
P(Y1=1) = P(X=1 or X=2 or X=3) = P(X=1) + P(X=2) + P(X=3) = 3/6 = 1/2
Similarly, to compute P(Y2=1), we need to find the probability that Z is either 3, 4, 5, or 6. Again, since each face of a fair dice has an equal probability of appearing, we have:
P(Z=3) = P(Z=4) = P(Z=5) = P(Z=6) = 1/6
Therefore,
P(Y2=1) = P(Z=3 or Z=4 or Z=5 or Z=6) = P(Z=3) + P(Z=4) + P(Z=5) + P(Z=6) = 4/6 = 2/3
Thus,
P(Y1=1, Y2=1) = P(Y1=1) * P(Y2=1) = (1/2) * (2/3) = 1/3
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Select the statement that describes this expression: 8 + fraction 1 over 2 x (6 − 2) − 1
Using division, we can find that the best statement that describes the given expression is:
Add 8 to half the difference of 6 and 2, then subtract 1.
Define division?One of the fundamental mathematical operations is division, which entails breaking a bigger number into smaller groups with the same number of components. How many groups will be created, for instance, if 30 pupils are required to be split into groups of five for a sporting event? The division operation can quickly and easily fix such issues. In this case, we must divide 30 by 5. 30 x 5 = 6 will be the outcome. There will be a total of 6 groups, each with 5 pupils. Use the beginning number, 30, which is obtained by multiplying 6 by 5, to check this response.
8 + fraction 1 over 2 x (6 − 2) − 1.
The above is expressed mathematically as:
8 + 1/2(6 - 2) - 1
Therefore, the statement that describes this expression from the options given correctly is :
Add 8 to half the difference of 6 and 2, then subtract 1.
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We can use division to determine that the following statement best captures the meaning of the given expression:
To make up the difference between 6 and 2, add 8 and then take away 1.
Define division?Division, which involves dividing a larger number into smaller groups with the same number of components, is one of the basic mathematical operations. For instance, if 30 students must be divided into groups of five for a sporting event, how many groups will be formed. Such problems can be rapidly and readily resolved by the division operation. In this instance, we need to multiply 30 by 5. The outcome is 30 x 5 = 6.
There will be 6 groups in total, each with 5 students. To verify this response, use the starting number, 30, which is produced by dividing
6 by 5.
1 x (6 x 2) + 8 plus fraction 1 over 2 = 8.
The following can be represented mathematically:
8 + 1/2(6 - 2) - 1
Therefore, from the available possibilities, the statement that accurately represents this expression is:
To make up the difference between 6 and 2, add 8 and then take away 1.
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Find the plane determined by the intersecting lines.
L1 x=−1+t y=2+4t z=1−3t
L2 x=1−4s y=1+2s z=2−2s
Thus, the equation of the plane determined by the intersecting lines L1 and L2 is: -2x + 14y + 18z - 48 = 0.
To find the plane determined by the intersecting lines L1 and L2, we need to find a normal vector to the plane.
First, we'll find two direction vectors for the lines L1 and L2.
For L1:
x = -1 + t
y = 2 + 4t
z = 1 - 3t
Taking the differences of these equations, we obtain two direction vectors for L1:
v1 = <1, 4, -3>
For L2:
x = 1 - 4s
y = 1 + 2s
z = 2 - 2s
Again, taking the differences of these equations, we obtain two direction vectors for L2:
v2 = <-4, 2, -2>
Since the plane contains both lines, the normal vector to the plane will be perpendicular to both direction vectors, v1 and v2.
To find the normal vector, we can take the cross product of v1 and v2:
n = v1 x v2
n = <1, 4, -3> x <-4, 2, -2>
Using the cross product formula, the components of the normal vector n can be calculated as follows:
n = <(4 * -2) - (-3 * 2), (-3 * -4) - (1 * -2), (1 * 2) - (4 * -4)>
n = <-8 - (-6), 12 - (-2), 2 - (-16)>
n = <-2, 14, 18>
So, the normal vector to the plane determined by the intersecting lines L1 and L2 is n = <-2, 14, 18>.
Now we can write the equation of the plane using the normal vector and a point on the plane (which can be any point on either L1 or L2).
Let's choose the point (-1, 2, 1) on L1.
The equation of the plane can be written as:
-2(x + 1) + 14(y - 2) + 18(z - 1) = 0
Simplifying:
-2x - 2 + 14y - 28 + 18z - 18 = 0
-2x + 14y + 18z - 48 = 0
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PLEASE ILL DO ANYTHING I ALREADY OFFERED AS MUCH POINTS AS POSSIBLE
Answer:
A, B, D, E
Step-by-step explanation:
Given expression:
(0.06) · (0.154)When multiplying decimals, multiply as if there are no decimal points:
\(\implies 6 \times 154 = 924\)
Count the number of digits after the decimal in each factor:
0.06 → 2 digits0.154 → 3 digitsTherefore, there is a total of 5 digits.
Put the same number of total digits after the decimal point in the product:
\(\implies (0.06) \cdot (0.154)=0.00924\)
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Answer option A
\(\boxed{6 \cdot \dfrac{1}{100} \cdot 154 \cdot \dfrac{1}{1000}}\)
When dividing by multiples of 10 (e.g. 10, 100, 1000 etc.), move the decimal point to the left the same number of places as the number of zeros.
Therefore:
6 ÷ 100 = 0.06154 ÷ 1000 = 0.154\(\implies 6 \cdot \dfrac{1}{100} \cdot 154 \cdot \dfrac{1}{1000}=(0.06) \cdot (0.154)\)
Therefore, this is a valid answer option.
Answer option B
\(\boxed{6 \cdot 154 \cdot \dfrac{1}{100000}}\)
Multiply the numbers 6 and 154:
\(\implies 6 \times 154 = 924\)
Divide by 100,000 by moving the decimal point to the left 5 places (since 100,000 has 5 zeros).
\(\implies 6 \cdot 154 \cdot \dfrac{1}{100000}=0.00924\)
Therefore, this is a valid answer option.
Answer option C
\(\boxed{6 \cdot (0.1) \cdot 154 \cdot (0.01)}\)
Again, employ the technique of multiplying decimals by first multiplying the numbers 6 and 154:
\(\implies 6 \cdot 154 = 924\)
Count the number of digits after the decimal in each factor:
0.1 → 1 digit0.01 → 2 digitsTherefore, there is a total of 3 digits.
Put the same number of digits after the decimal point in the product:
\(\implies 0.924\)
Therefore, as (0.06) · (0.154) = 0.00924, this answer option does not equal the given expression.
Answer option D
\(\boxed{6 \cdot 154 \cdot (0.00001)}\)
Again, employing the technique of multiplying decimals.
As there are a total of 5 digits after the decimals:
\(\implies 6 \cdot 154 \cdot (0.00001)=0.00924\)
Therefore, this is a valid answer option.
Answer option E
\(\boxed{0.00924}\)
As we have already calculated, (0.06) · (0.154) = 0.00924.
Therefore, this is a valid answer option.
use the GCF and the distributive property to write 12+45 as a product
Answer:
12+45=57 good job for me y
Step-by-step explanation:
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