Answer: (4)
Step-by-step explanation:
Two lines E and F are same.
5x + 5y = 40
x + y = 8
Deviding both hands of E by 5,
we get F's equation.
So every single point on the line x+y=8
represents the solution of the given system.
What is the factored form of 3x² 14x 8?
The factored form of 3x² + 14x + 8 is (3x + 4)(x + 2).
What is factor?Factor is a number that can be divided evenly into another number. Factors are used in mathematics to simplify equations, calculate percentages, and solve problems. Factors can also be used to identify the greatest common factor (GCF) between two or more numbers. Factors can also be used to find the least common multiple (LCM) of two or more numbers.
This is the product of the two binomials (3x + 4) and (x + 2),which are the factors of the equation.
The process of factoring an equation involves breaking it down into its component parts,
which in this case are 3x² + 14x + 8. The factors of this equation are determined by first finding the greatest common factor (GCF) of the terms, which in this case is 3x + 4.
Then, the GCF is divided by each of the terms to determine the other factor. For example, 3x² / 3x + 4 =x + 2.
When the two factors are multiplied together, the result is the original equation.
To know more about factor click-
https://brainly.com/question/25829061
#SPJ4
Prove that the expression 2x(x–6)–3(x^2–4x+1) is negative for all values of x.
Step-by-step explanation:
The expression can be simplified to -3 - x² which is a concave downward parabola with a maximum at y=-3. Hence all values are less than or equal to -3 and thus negative.
what’s the answer(s) ?
Help ASAP !! I need this done !! Bye 12:50 pm !
Answer:
12. 1/4= 0.25 and 20/100÷20/20= 1/5 =0.20
Hence 0.25 =/ 0.20
ASAP math help plssss
Answer:
1.4³ has three decimal places.
1.4³=2.744
Step-by-step explanation:
(1.4)3
1.4 as a fraction = 1 and 4/10. We can reduce this to lowest terms by dividing the numerator and denominator or 4/10 by 2 to get the equivalent fraction 1 and 2/5
then we raise it to power 3 then we get 2.744
Need answers immediately, thank you in advance!
Step-by-step explanation:
this is the answer...............
In a school, 40% of students have brown eyes. find the experimental probability that in a group of 4 students. at least one of them has brown eyes.
The experimental probability that at least one student in a group of 4 students has brown eyes is approximately 0.8704, or 87.04%.
To find the experimental probability that at least one student in a group of 4 students has brown eyes, we can consider the complementary event, which is the probability that none of the students have brown eyes.
Given that 40% of students have brown eyes, the probability that a single student does not have brown eyes is 1 - 0.4 = 0.6.
Therefore, the probability that all 4 students do not have brown eyes is:
\(0.6 * 0.6 * 0.6 * 0.6 = 0.6^4 = 0.1296\)
To find the probability that at least one student has brown eyes, we subtract the probability that none of them have brown eyes from 1:
1 - 0.1296 = 0.8704
So, the experimental probability that at least one student in a group of 4 students has brown eyes is approximately 0.8704, or 87.04%.
Learn more about probability here:
https://brainly.com/question/31828911
#SPJ11
7. Let a, b, c be integers, with a 0. Let ₁ and 2 be the roots of ax² + bx+c. (a) Show that if r₁ is rational, then so is 12. (b) Show that if a root is rational, then it can be written as, where p, q are integers, q divides a, and p divides c. (This is the Rational Roots Theorem for quadratic polynomials. You will need some facts from number theory to solve this problem.)
a) If r₁ is rational, then 12 is also rational.
b) If one of the roots is rational, then it can be written as p/q where p, q are integers, q divides a and p divides c.
Given that a, b, c are integers, with a ≠ 0. Let ₁ and 2 be the roots of
ax² + bx+c.
We need to show the following :
a) If r₁ is rational, then so is 12
b) If a root is rational, then it can be written as p/q where p, q are integers, q divides a and p divides c.
a) Let r₁ be rational.
Therefore, r₂= (b/a) - r₁ is also rational. Sum of roots ₁ and 2 is equal to -b/a.
Therefore,r₁ + r₂ = -b/a
=> r₂= -b/a - r₁
Now,
12= r₁ r₂
= r₁ (-b/a - r₁)
= -r₁² - (b/a) r₁
Therefore, if r₁ is rational, then 12 is also rational.
b) Let one of the roots be r.
Therefore,
ax² + bx+c
= a(x-r) (x-q)
= ax² - (a(r+q)) x + aqr
Now comparing the coefficients of x² and x, we get- (a(r+q))=b => r+q=-b/a ...(1) and
aqr=c
=> qr=c/a
=> q divides a and p divides c.
Now, substituting the value of q in equation (1), we get
r-b/a-q
=> r is rational.
Therefore, if one of the roots is rational, then it can be written as p/q where p, q are integers, q divides a and p divides c.
Know more about the rational
https://brainly.com/question/20400557
#SPJ11
A dance group and a rock band competed in the talent show. There were 4 students in the rock band. There were 8 times as many students in the dance group as the rock band.
How many students were in the dance group?
Answer:
32-
Step-by-step explanation:
4 X 8 = 32
Hope this helps-
24.7% of the products in the local shop are specialty soaps. 76% of those soaps are made with fresh herbs. if there are 350 bars of specialty soap in the shop, approximately how many of them are not made with fresh herbs? round your answer up to nearest whole number
we know that 76% of the specialty soaps are made with fresh herbs, and we also know that there are a total of 350 specialty soap bars, so how many are made with fresh herbs? well, just 76% of those 350
\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{76\% of 350}}{\left( \cfrac{76}{100} \right)350}\implies 266\)
Find the area of a rhombus whose lengths of two diagonals are 25cm
and 20 cm.
Answer:
250 cm²Step-by-step explanation:
Formulas to Calculate Area of Rhombus
Using Diagonals A = ½ × d1 × d2Using Base and Height A = b × h
Using Trigonometry A = b2 × Sin(a)
A = ½ × d1 × d2
1/2 × 25 × 20 =
250 cm²
A company's profit, currently $58,000, grows at the rate of 5% per year. The amount P after t years can be expressed by the exponential equation
P = 58000(1 + 0.05)t. Identify the number of years it will take for the profit to exceed $80,000.
A) 5
B) 6
C) 4
D) 7
Answer:
D) 7
Step-by-step explanation:
P=58000(1+0.05)^t
P=58000 x 1.05^t
58000 x 1.05^7= 81611.8245
D) 7
The number of 7 years will take for the profit to exceed $80,000
What is an exponential function?Mathematical functions with exponents include exponential functions. f(x) = bˣ, where b > 0 and b 1, is a fundamental exponential function.
Given:
A company's profit, currently $58,000, grows at the rate of 5% per year. The amount P after t years can be expressed by the exponential equation
P = 58000(1 + 0.05\()^{t}\)
We have P = 80,000.
So,
80000/58000 = (1 + 0.05\()^{t}\)
1.38 = (1.05\()^{t}\)
Taking log both sides, we get,
t = ln(1.38)/ln(1.05)
t = 0.136/0.02
t = 6.8
t ≈ 7 years.
Therefore, the time required is 7 years.
To learn more about the exponential;
https://brainly.com/question/14344314
#SPJ2
Calculate the mean and median of the data set below: 15, 12, 11, 19, 21, 13, 14, 16, 20, 19
Answer: Mean=16 Median= 15.5
Step-by-step explanation: for the mean put them all in numerical order then add all the numbers then divide by the number of numbers there are. for the median keep them in numerical order and cross out one on each end then when you get two the last two numbers, find what's in between. for example, if you had 15 and 16 15.5 would be the median.
Answer:
mean = 16 ; median= 11,12,13,14,15,16,19,19,20,21
Step-by-step explanation:
mean= 15+12+11+19+21+13+14+16+20+19=160
160/10=16
median=11,12,13,14,15,16,19,19,20,21
three percent of the customers of a mortgage company default on their payments. a sample of five customers is selected. what is the probability that exactly two customers in the sample will default on their payments?
The probability that exactly two customers in the sample will default on their payments is 0.9997.
What is the probability that exactly two customers in the sample will default on their payments?
This is a binomial probability problem with n = 5 trials and p = 3% = 0.03 probability of success (default) on each trial.
The probability of exactly two defaults can be calculated using the binomial probability formula:
P(x = r) = nCr * p^r * q^n-r
where q = 1 - p = 1 - 0.03 = 0.97
P(x = 2) = (5C0 × 0.03⁰ × 0.97⁵⁻⁰) + (5C1 × 0.03¹ × 0.97⁵⁻¹) + (5C2 × 0.03² × 0.97⁵⁻²)
P(x = 2) = 0.9997
Learn more about binomial distribution on:
brainly.com/question/29220138
#SPJ1
Suppose a random variable X is Normally distributed with a mean of 10 and a standard deviation of 2 . If P(X≤12) is given by 0.8413, find P(X>=12) ? a. 0.9773 b. 0.8413 c. 0.1587 d. 0.0227
The probability of observing a value greater than or equal to 12 is 0.1587, which corresponds to option c. 0.1587. The area under the normal curve represents the probability of observing a value within a certain range.
In this case, P(X≤12) is given as 0.8413, which means that the probability of observing a value less than or equal to 12 is 0.8413. To find P(X>=12), we can use the fact that the total area under the normal curve is 1. Since the normal distribution is symmetric, we can subtract the probability of the event from 1 to find the probability of the complementary event.
P(X>=12) = 1 - P(X≤12)
P(X>=12) = 1 - 0.8413
P(X>=12) = 0.1587
Therefore, the probability of observing a value greater than or equal to 12 is 0.1587, which corresponds to option c. 0.1587.
Learn more about probability here:
https://brainly.com/question/31828911
#SPJ11
Helpppp!!!!
Which of the following are square roots of the number below? Check all that
apply.
49
A. 7
B. 28
C. 8
D. -491/2
E. -7
F. 491/2
Answer:
Step-by-step explanation:
Because 7(7)=(-7)(-7)=49 the square roots of 49 are 7 and -7
Which inequality is a correct translation of the statement?The set of all numbers that are at least 6.5.n ≥ 6.5 n < 6.5n ≤ 6.5 n > 6.5
The set that we must describe is composed of those which are at least 6.5. At least means that these values are either 6.5 or greater. Then if n is any element of this set it meets the following condition:
\(n\ge6.5\)AnswerThen the answer is the first option.
Does this graph show a function? Explain how you know.
• A. No; there are y values that have more than one x-value.
• B. No; the graph fails the vertical line test.
• C. Yes; the graph passes the vertical line test.
• D. Yes; there
are no y values that have more than one x-value
The correct option regarding whether the graph shows a function is given by:
C. Yes; the graph passes the vertical line test.
When does a graph show a function?In a function, one value of the input can be related to only one value of the output. Hence, in a graph, it means that for each value of x(horizontal axis), there can only be one respective value of y(vertical axis), which will mean that the graph will pass the vertical line test.
In this problem, the condition is respected, hence option C is correct.
More can be learned about functions at https://brainly.com/question/12463448
#SPJ1
h(t)=( 1)/(3) t-10, find h(t) when t =27 and when t= -15
I need help with this question
A company that makes hard candy have a standard bag of hard candy with 150 pieces. The hard candy has three distinct colors red, white and orange and equal proportion of each candy is present in the standard bag. The manager wants to know whether the bags produced last Monday were similar to the standard bag. To test this, they plan to choose a random bag from the batch and compare it with the standard bag. You will have to answer questions below to assist the manager in comparing the two bags. Based on the data provided above how many degrees of freedom will you have while performing the necessary test of comparison
Answer:
The degrees of freedom, Df = The number of bags produced on Monday - 1
Step-by-step explanation:
The number of degrees of freedom is the limiting number of values that are logically not influenced by other values such that they are capable of having variation
The degrees of freedom = The sample size - 1 = N - 1
Therefore, the degrees of freedom, Df = The number of bags produced on Monday - 1
hospital records show that 16% of all patients are admitted for heart disease, 26% are admitted for cancer (oncology) treatment, and 8% receive both coronary and oncology care. what is the probability that a randomly selected patient is admitted for something other than coronary care? (note that heart disease is a coronary care issue.)
0.86 is the probability that a randomly selected patient is admitted for something other than coronary care.
What is probability ?
The likelihood that something will occur is the foundation of it. The justification for probability serves as the basic foundation for theoretical probability.A coin is tossed, for instance, and the theoretical likelihood of receiving a head is 1 in 2.Let H denotes the patients are admitted for heart disease.
Let C denotes the patients are admitted for cancer treatment.
We are given:
P(H) = 0.16
P(C) = 0.26
P( H ∩ C ) = 0.8
P(Hc ) = 1 - P(H) = 1 - 0.16 = 0.86
Learn more about probability
brainly.com/question/11234923
#SPJ4
The problem is a word problem: The sum of two consecutive odd numbers is 72. find the numbers
Answer:
35 and 37
Step-by-step explanation:
consecutive ODD numbers, 35 then 37.. 35+37 = 72
A normal population has a mean of 21 and a standard deviation of 6. Use Appendix B.3. a. Compute the z value associated with 24. (Round your answer to 2 decimal places
In statistics, the "z-score" is used to determine how far away from the mean a data point is. It indicates how many standard deviations the data point is from the mean.
The formula for calculating the z-score is given below:
z = (x - μ) / σ
where: x = data point
μ = population mean
σ = population standard deviation
Given a normal population with a mean of 21 and a standard deviation of 6, we can compute the z-score associated with 24 as follows:
z = (x - μ) / σz = (24 - 21) / 6z = 0.50
To compute the z-value associated with 24, we use Appendix B.3 which gives the area under the normal distribution curve for different z-scores.
Looking at Appendix B.3, we find that the area to the left of z = 0.50 is 0.6915 (rounded to 4 decimal places). Therefore, the z value associated with 24 is 0.50.
Note: The answer has been provided in less than 100 words, but the computation involved has been thoroughly explained.
To know more about standard deviation visit :
https://brainly.com/question/29115611
#SPJ11
Find the value of x, y, and z in the parallelogram below.
P=
y =
11
(-y-1)⁰
119⁰
(-4x-5)
(-10z+1)
Answer:
\(\boxed{x = -31}\)
\(\boxed{y = -62}\)
\(\boxed{z = -6}}\)
Step-by-step explanation:
There are a couple of properties of parallelograms that can help solve for the unknowns
The opposite angles of a parallelogram are congruent(equal)Consecutive angles are supplementary(add up to 180°)Using property 1 that opposite angles are equal we have:
-4x - 5 = 119
⇒ -4x = 119 + 5
⇒ -4x = 124
⇒ x = 124/-4
⇒ x = -31
Using property 2 that consecutive angles are supplementary on angles
(-y - 1)° and 119°:
(- y - 1) + 119 = 180
⇒ - y - 1 + 119 = 180
⇒ - y + 118 = 180
⇒ - y = 180 - 118
⇒ - y = 62
⇒ y = -62
Using property 2 for angles (-10z - 1)° and 119°
(-10z + 1) + 119 = 180
- 10z + 1 + 119 = 180
⇒ - 10z + 120 = 180
⇒ -10z = 180 - 120
⇒ -10z = 60
⇒ z = 60/-10
⇒ z = -6
The puppy needs to catch a train that is moving at 8 km/h. She is 100m away and running at 10 km/h. How far will the train have traveled before the puppy is able to jump on?
Answer:
400 meters
0 meters if the puppy can jump really really far ha ha ....
P = 10000x - 100
T = 8000x
10000x - 100 = 8000x
2000x = 100
x = 1/20 hr
60/20 = 3 minutes
Step-by-step explanation:
i need help with this one some one help pls
PLEASE HELP I WILL GIVE YOU BRAINLESS W ITS CALLED AND 20 points .
My question is in the form of a picture see attached below.
A semicircle rotated around its axis gives sphere, rectangle rotated around its axis gives sphere . and a right triangle rotated around its axis gives sphere
what is rectangle?
A rectangle is a four-sided flat shape with straight sides and four right angles. It is a type of parallelogram, with opposite sides equal in length and parallel to each other. The area of a rectangle can be calculated by multiplying its length and width, while its perimeter can be found by adding the lengths of all four sides.
In the given question,
A semicircle rotated around its axis gives sphere,
A rectangle rotated around its axis gives sphere .
A right triangle rotated around its axis gives sphere
To know more about rectangle rotation , visit:
https://brainly.com/question/15905456
#SPJ1
Let f(x) represent the linear parent function.
Which descriptions match the given transformations?
Drag and drop the answers into the boxes..
f(x) - 15
15f (x)
f(x) is translated 15 units up.
f(x) is translated 15 units left.
f(x) is translated 15 units down. f(x) is vertically compressed by a factor of 15.
f (x) is vertically stretched by a factor of 15.
The given transformation of a function f(x) - 15 and 15 f(x) represents "f(x) is translated 15 units down and f(x) is vertically stretched by a factor of 15" respectively.
What are the transformation rules for the translation and dilation of a function?The translation transformation rule for a function is
1) f'(x) = f(x) + a; Vertical translation by 'a' units up.
f'(x) = f(x) - a; Vertical translation by 'a' units down.
2) f'(x) = f(x + a); horizontal translation by 'a' units left
f'(x) = f(x - a); horizontal translation by 'a' units right.
The dilation transformation rule for a function is
1) f'(x) = a f(x);
If a > 1, vertical stretch by a factor of 'a' units
If 0 < a < 1, vertical compression by a factor of 'a' units
2) f'(x) = f(ax);
If a > 1, horizontal compression by a factor of 'a' units
If 0 < a < 1, horizontal compression by a factor of 'a' units.
Calculation:It is given that f(x) represents the linear parent function.
The transformed functions are given as
f(x) - 15 and 15 f(x)
The transformation f(x) - 15 is a vertical translation of the function f(x) by 15 units down.
The transformation 15 f(x) is a vertical stretch by a factor of 15 units.
Learn more about translation and dilation transformations of a function here:
https://brainly.com/question/28595882
#SPJ1