-1/3-4/9 i don't know how to subtract fractions
Answers
Answer: -7/9
Step-by-step explanation: Get the LCM of the denominator 3 and 9
Place both fractions using same LCM
You will have - 3/9 -4/9 = -7/9
Because they both have negative signs, you will add 3 and 4
Related Questions
what values make the inequality 3x-5>16 true
Answers
Answer:
x > 7
Step-by-step explanation:
3x - 5 > 16 Add 5 to both sides
3x - 5 + 5 > 16 + 5
3x > 21 Divide both sides by 3
x > 7
Helping in the name of Jesus.
Circle e has a radius of 40 inches with m arc ABC=324 degrees. Find the exact length of arc ABC.
Answers
Substituting the values
Length of the arc = (2) (40) (324° / 360°)
By further calculation
= (80) (0.9)
So we get
= (80) (3.14) (0.9)
= 226.08 cm.
Therefore, the length of the arc is 226.08 cm.
Hope this helps
help me and no links
Answers
Answer:
56°
Step-by-step explanation:
the sum of the is angles always 180, so put equal to 180
40 + 2x +3x = 180
5x = 140
x = 28
plug in
2(28) = 56
If you help I'll mark as brilliant!!!
Answers
Answer:
I had 16/5 instead of 5/16
Step-by-step explanation:
10 (a+b) = 42a
10a + 10b =42a
10b = a( 42 - 10)
(10)b = a(32)
32 /10 = a/b
16/5 = a /b
Ratio of a to b = 16 : 5
Determine whether the following statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. Because there are 3 feet in one yard, there are also 3 square feet in one square yard. Question content area bottom Part 1 Choose the correct answer below. A. The statement is true. B. The statement is false. Because there are 3 feet in one yard, there are 27 square feet in one square yard. C. The statement is false. Because there are 3 feet in one yard, there are 6 square feet in one square yard. D. The statement is false. Because there are 3 feet in one yard, there are 9 square feet in one square yard.
Answers
The correct option regarding the scale factor and the statement in this problem is given as follows:
D. The statement is false. Because there are 3 feet in one yard, there are 9 square feet in one square yard.
How to obtain the correct scale factor?The scale factor between the length dimensions of the yard are given as follows:
3 feet = 1 yard.
(as these length dimensions are given in yards).
Then for the square units, the correct scale factor is found applying the proportion as follows:
(3 feet)² = (1 yard)².
9 feet squared = 1 square yard.
Hence the statement given in this problem, that because there are 3 feet in one yard, there are also 3 square feet in one square yard, is false, and the correct option is given by option D.
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let a chip be taken at random from bowl that contains 6 white chips , 3 red chips,and 1 blue chip. let random variable X=1 if the outcome is whit chip, let x=5 if the outcome is a red chip and let x= 10 if the outcome is blue chip.
1- find the p.s.f of X
2- Graph the p.m.f as bar graph
Answers
1- As per the probability, The P.S.F of X is 1, 5, and 10
2- The Graph of the PMF as bar graph is illustrated below.
To find the probability mass function (p.m.f) of X, we need to determine the probability of each possible value of X.
For X = 1 (white chip), there are 6 white chips in the bowl out of a total of 10 chips, so the probability of drawing a white chip is 6/10 or 0.6. Therefore, P(X=1) = 0.6.
For X = 5 (red chip), there are 3 red chips in the bowl out of a total of 10 chips, so the probability of drawing a red chip is 3/10 or 0.3. Therefore, P(X=5) = 0.3.
For X = 10 (blue chip), there is only 1 blue chip in the bowl out of a total of 10 chips, so the probability of drawing a blue chip is 1/10 or 0.1. Therefore, P(X=10) = 0.1.
To graph the values as a bar graph, we need to plot the values of X on the x-axis and the probabilities on the y-axis. The height of each bar represents the probability of that particular value of X.
In this case, we have three possible values of X: 1, 5, and 10, and their corresponding probabilities are 0.6, 0.3, and 0.1, respectively.
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Question 1 (1 point)
Willorie Ford moves to Lake Havasu City Arizona to try out a food truck. She sets up shop
under London Bridge and notices that her business is "seasonal".
On December 1, she makes $450 per day.
On March 1, she makes $800 per day.
On June 1, she makes $450 per day.
On September 1, she makes $100 per day.
On December 1, she makes $450 per day.
Estimate how much she would make on certain days and draw a model.
By this model, she would make $
By this model, she would make $
By this model, she would make $
By this model, she would make $
on February 1. (Round to the nearest dollar)
on May 1. (Round to the nearest dollar)
on July 1. (Round to the nearest dollar)
on August 1. (Round to the nearest dollar)
Answers
Step-by-step explanation:
2,250 was made in a month
Which of the following is an acceptable way to express the useful life of a depreciable asset?a.Expected number of units to be produced by the depreciable asset b.Expected number of hours the depreciable asset will remain productive .c .Expected number of miles a depreciable vehicle will be driven d.Expected life in years of the depreciable asset
Answers
d. Expected life in years of the depreciable asset. The acceptable way to express the useful life of a depreciable asset is in terms of the expected life in years.
The useful life refers to the period of time over which the asset is expected to contribute to the revenue-generating activities of a business.
While options a, b, and c may be relevant factors for certain specific assets (such as units produced, hours of productivity, or miles driven), they do not encompass the overall concept of useful life. Useful life is a broader measure that takes into account the anticipated duration of productive use, regardless of specific output or activity metrics.
Expressing the useful life in years provides a common standard for comparison and allows for consistency in depreciation calculations and financial reporting. It is a practical and widely accepted approach to estimating the lifespan of a depreciable asset.
It is worth noting that the estimated useful life in years may vary depending on the nature of the asset and industry practices. It is typically determined based on factors such as technological advancements, physical wear and tear, economic obsolescence, and the intended purpose of the asset.
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Maria put 18 crayons in 3 different baskets. She put the same number of crayons in each basket
Answers
Answer:
there are 6 crayons in each basket.
Step-by-step explanation:
Answer:
54 or 6 I would go with the 54 but if she 18 crayons in 3 it would be that but if she split 18 in thirds and put them in the basket you should put 6 if its that.
Step-by-step explanation:
given g (x) =-x-4 find g(-2)
Answers
Hi there, here's your answer:
Given \(g(x) = -x-4\)
To find \(g(-2)\)
Substituting -2 in place of x:
\(-(-2) - 4 = 2-4 = -2\)
∴ \(g(-2) = -2\)
Hope it helps! Please mark as brainliest!
find two numbers whose difference is 164 and whose product is a minimum.
Answers
Answer: The lowest possible product would be -6724 given the numbers 82 and -82.
We can find this by setting the first number as x + 164. The other number would have to be simply x since it has to have a 164 difference.
Next we'll multiply the numbers together.
x(x+164)
x^2 + 164x
Now we want to minimize this as much as possible, so we'll find the vertex of this quadratic graph. You can do this by finding the x value as -b/2a, where b is the number attached to x and a is the number attached to x^2
-b/2a = -164/2(1) = -164/2 = -82
So we know one of the values is -82. We can plug that into the equation to find the second.
x + 164
-82 + 164
82
Step-by-step explanation: Hope this helps.
Solve the equation x/1-x - 4x = 0
Answers
Answer: x=0
Step-by-step explanation:
In 2011, the moose population in a park was measured to be 5,800. By 2017, the population was measured again to be 8,000. If the population continues to change exponentially, find an equation for the moose population, P, as a function of t, the years since 2011.What does your model from above predict the moose population to be in 2022?
Answers
This problem asks to:
a) Find a model to predict the population P as a function of t (years since 2011).
b) Predict the population in 2022.
To find this information, follow the steps below.
Step 1: Write a general equation for populational growth.
The population growth can be represented as:
\(P=P_0\cdot e^{r\cdot t}\)Where:
P is the population in time t;
Po is the initial population;
r is the rate of growth;
t is the time.
Step 2: Write the equation that represents the moose population.
Since the problems aks to evaluate the population from 2011. Use the population in 2011 as the initial population.
Then, P0 = 5,800.
\(P=5,800\cdot e^{r\cdot t}\)Now, to find r, use the information for 2017.
In 2017,
P = 8,000
t = 6 (2017 - 2011)
Then,
\(\begin{gathered} 8,000=5,800\cdot e^{r\cdot6} \\ \end{gathered}\)To isolate r, first divide both sides by 5,800:
\(\begin{gathered} \frac{8,000}{5,800}=e^{r\cdot t} \\ \frac{80}{58}=e^{r\cdot t} \\ \end{gathered}\)Take the ln from both sides.
\(\begin{gathered} \ln (\frac{40}{29})=\ln e^{6r} \\ \text{ Using the properties of ln:} \\ \ln (\frac{40}{29})=6r\cdot\ln e \\ \ln (\frac{40}{29})=6r\cdot1 \\ \ln (\frac{40}{29})=6r \end{gathered}\)Divide both sides by 6:
\(\begin{gathered} \frac{6r}{6}=\frac{\ln (\frac{40}{29})}{6} \\ r=\frac{\ln(\frac{40}{29})}{6} \\ or \\ r=\frac{0.3216}{6}=0.0536 \end{gathered}\)So,
(a) The equation that represents the moose population over the years is:
\(P=5,800\cdot e^{0.0536\cdot t}\)Step 3: Predict the population in 2022.
In 2022,
t = 11 (2022 - 2011).
Then,
\(\begin{gathered} P=5,800\cdot e^{0.0536\cdot t} \\ P=5,800\cdot e^{0.0536\cdot11} \\ P=5,800\cdot e^{0.5895} \\ P=5,800\cdot1.8032 \\ P=10,458.6 \\ P=10,459 \end{gathered}\)(b) The moose population in 2022 will be 10,459.
Answer:
(a)
\(P=5,800\cdot e^{0.0536\cdot t}\)(b) 10,459.
2 doctors is
% of 25 doctors.
Answers
The percentage of doctors that makes up 2 of 25 total number of doctors would be = 8%
How to calculate the percentage of doctors?The total number of doctors that are given = 25
The equivalent of 25 doctors in percent = 100%
Therefore the equivalent of 2 doctor in percentage= ?
That is;
100% = 25 doctors
X % = 2 doctors
Make X the subject of formula;
X = 100×2/25
X = 200/25
X= 8%
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A cook whole preparing noodles adds the right ingredients for nine times and makes an error is adding the ingredients for three times what is the probability that the cook adds the right ingredients and cooks well
Answers
The probability that the cook adds the right ingredients and cooks the noodles well is 3/4 or 75%.
I understand that you need help calculating the probability of a cook adding the right ingredients while preparing noodles.
To determine the probability, we need to consider the number of successful attempts and the total number of attempts. In this scenario, the cook adds the right ingredients nine times and makes an error three times.
Therefore, there have been 12 attempts in total (9 successful attempts + 3 erroneous attempts).
The probability of adding the right ingredients is calculated by dividing the number of successful attempts (9) by the total number of attempts (12).
So, the probability is:
P(success) = 9 successful attempts / 12 total attempts
By simplifying this fraction, we get:
P(success) = 3/4
Therefore, the probability that the cook adds the right ingredients and cooks the noodles well is 3/4 or 75%. This means that out of every 12 attempts, the cook is likely to add the right ingredients and cook the noodles well nine times.
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Let U and V be independent random variables with means μ and variances σ2. Let Z = αU + V √ 1 − α2. Find E(Z) and rhoUZ.
Answers
The expected value of Z, E(Z), is αμ + μ * √(1 - α²).
The correlation coefficient between U and Z, ρUZ, is α.
These results provide insights into the relationship between the independent random variables U and V, and the newly defined random variable Z.
The expected value of a random variable represents the average value we would expect to obtain if we were to repeat the experiment many times. To find E(Z), we need to calculate the average value of Z.
We have Z = αU + V * √(1 - α²). Since U and V are independent, their expected values are simply their means, which are μ.
Now, let's calculate E(Z):
E(Z) = E(αU + V * √(1 - α²))
= αE(U) + E(V * √(1 - α²)) (by linearity of expectation)
= αμ + E(V) * √(1 - α²) (since E(U) = μ)
= αμ + μ * √(1 - α²) (since U and V have the same variance, their variances are both σ²)
Therefore, the expected value of Z, E(Z), is equal to αμ + μ * √(1 - α²).
Correlation coefficient between U and Z (ρUZ):
The correlation coefficient measures the linear relationship between two random variables. In this case, we want to find the correlation coefficient between U and Z, denoted as ρUZ.
The correlation coefficient ρUZ is defined as the covariance between U and Z divided by the product of their standard deviations.
To calculate ρUZ, we need to find the covariance between U and Z. The covariance between two random variables U and Z is given by:
Cov(U, Z) = E[(U - E(U))(Z - E(Z))]
Since U and V are independent, the covariance between U and V is zero. Therefore, we have:
Cov(U, Z) = Cov(U, αU + V * √(1 - α²))
= Cov(U, αU) + Cov(U, V * √(1 - α²))
= αCov(U, U) + 0
= αVar(U) (since Cov(U, U) = Var(U))
Using the given information that U has variance σ², we have:
Cov(U, Z) = ασ²
Next, let's calculate the standard deviations of U and Z.
Standard deviation of U (σU) = √(Var(U)) = √(σ²) = σ
Standard deviation of Z (σZ) = √(Var(Z))
= √(Var(αU + V * √(1 - α²)))
= √(α²Var(U) + Var(V * √(1 - α²))) (by independence)
= √(α²σ² + Var(V * √(1 - α²))) (since Var(U) = σ²)
= √(α²σ² + (1 - α²)Var(V)) (since Var(V * c) = c²Var(V), where c is a constant)
= √(α²σ² + (1 - α²)σ²) (since V has variance σ²)
= σ * √(α² + 1 - α²)
= σ * √(1)
Therefore, the standard deviation of Z, σZ, is equal to σ.
Now, we can calculate the correlation coefficient ρUZ:
ρUZ = Cov(U, Z) / (σU * σZ)
= ασ² / (σ * σ)
= α
Hence, the correlation coefficient between U and Z, ρUZ, is equal to α.
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Graph the line that has a slope of 1/2 and includes the point (6,7)
Answers
Answer:
Graph (0,4), graph (6,7) then connect in a straight line.
Step-by-step explanation:
You are now in week 10. After the analysis done in week 8, the new data collected now find that the progress of ‘build’ is 65% in week 9 and increase to 75% in week 10. The next phase of installation has not started. The project spent another RM5000 at week 9 and RM6000 at week 10 for the ‘build’ phase. Now calculate the new earned value in week 10. Using CPI and CV, compare performance at week 10 with week 8. Calculate the new FCAC and TCPI. Explain.
Answers
The new earned value in week 10 can be calculated by multiplying the total planned value of the project by the progress percentage achieved in week 10. To compare the performance at week 10 with week 8, we can calculate the Cost Performance Index (CPI) and Cost Variance (CV).
To calculate the new earned value in week 10, we multiply the total planned value by the progress percentage achieved in week 10. Let's assume the total planned value for the project is RM100,000. The earned value in week 10 would be 75% of RM100,000, which is RM75,000.
To compare the performance at week 10 with week 8, we calculate the Cost Performance Index (CPI) and Cost Variance (CV). The CPI is calculated by dividing the earned value by the actual cost. If the actual cost spent in week 10 is RM6,000, the CPI would be RM75,000 (earned value) divided by RM6,000 (actual cost), which equals 12.5.
The CV is calculated by subtracting the actual cost from the earned value. In this case, the CV would be RM75,000 (earned value) minus RM6,000 (actual cost), which equals RM69,000.
To calculate the FCAC, we add the actual costs incurred in week 9 and week 10 (RM5,000 + RM6,000) to the planned costs for the remaining phases. Let's assume the planned costs for the remaining phases are RM40,000. The FCAC would be RM5,000 + RM6,000 + RM40,000, which equals RM51,000.
The TCPI is calculated by dividing the remaining budget by the remaining work. If the remaining budget is RM40,000 and the remaining work is 25% (100% - 75%), the TCPI would be RM40,000 divided by 25%, which equals RM160,000.
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The center of a normal curve is a. cannot be negative b. always equal to zero c. is the mean of the distribution d. is the standard deviation
Answers
The center of a normal curve is the mean of the distribution, making option C the right choice.
A normal distribution—also known as the bell curve or De Moivre distribution—occurs naturally in a variety of circumstances. Bell curve symmetry is present. The data will split in two, falling half to the left and half to the right of the mean.
The characteristics of a normal curve are as follows:
Bell-like symmetrical form.The distribution's mean and median, both of which are situated in their center, are equal. ≈ 68% of the data is within one standard deviation of the mean. ≈ 95% of the data is within two standard deviations of the mean. ≈ 99.7% of the data is within three standard deviations of the mean.Thus, the center of a normal curve is the mean of the distribution, making option C the right choice.
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which method represents a correct way to solve the equation 2(t−5)=48?
Answers
The solution to the equation 2(t - 5) = 48 is t = 29.
To solve the equation 2(t - 5) = 48, we can use the following steps:
Distribute the 2 to the terms inside the parentheses:
2t - 10 = 48
Add 10 to both sides of the equation to isolate the variable term:
2t = 58
Divide both sides of the equation by 2 to solve for t:
t = 29
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(c-5)(c-6)
please answer
Answers
Answer:
c² - 11c + 30
Step-by-step explanation:
(c - 5)(c - 6)
each term in the second factor is multiplied by each term in the first factor , that is
c(c - 6) - 5(c - 6) ← distribute parenthesis
= c² - 6c - 5c + 30 ← collect like terms
= c² - 11c + 30
The answer is:
\(\sf{c^2-11c+30}\)
Work/explanation:
Remember that to multiply binomials, we use FOIL:
F = first
O = outside
I = inside
L = last
Now multiply.
The first terms are c and c.
\(\sf{(c-5)(c-6)}\)
\(\sf{c^2}\)
Next, we multiply c times -6
\(\sf{-6c}\)
Then, we multiply -5 times c
\(\sf{-5c}\)
Finally, we multiply -5 times -6
\(\sf{-30}\)
Put the terms together
\(\sf{c^2-6c-5c+30}\)
Combine like terms
\(\sf{c^2-11c+30}\)
Zoe is exactly twelve and one-half years old, and her niece Yolonda is one-third as old as Zoe. Yolanda is ? Months old
Answers
Answer:
The answer is 4.16!
Step-by-step explanation:
i think that is right
a particular instrument departure procedure requires a minimum climb rate of 210 feet per nm to 8,000 feet. if you climb with a ground speed of 140 knots, what is the rate of climb required in feet per minute? a. 210 b. 450 c. 490
Answers
The rate of climb required in feet per minute is 490.
The Ground Speed = 140 Knots
The ground speed in minutes = 140/60
= 2.33 knots
Required speed is in feets per minutes so mulitply the knots with 210
Required Rate = 210 X 2.33
= 489.93
≈ 490.
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Can someone help me with this please?
Answers
Answer:
Solution given:
<J=90°[tangent to the circle is perpendicular to radius]
In right angled triangle ∆KJL
base[b]=10
hypotenuse [h]=x+10
perpendicular [p]=24
by using Pythagoras law
p²+b²=h²
24²+10²=(x+10)²
(x+10)²=676
x+10=√676
x=26-10
x=16
Which answer choice is it?
A 100 degrees
B 135 degrees
C 95 degrees
D 117 degrees
Answers
Answer:
A 100 degrees I'm positive
Answer:
A. 100 degrees
Step-by-step explanation:
(-81) + 70=
Uhhhh answer someone-
Answers
Answer:
-11
Step-by-step explanation:
Find the unit rate
a. 5 movie tickets for $25.00
b. mowed 5 yards for $35.00
c. 6 calculators cost $240.00
d. 8 dollars for 2 cans of tuna
Answers
Answer:
A. $5
B. $7
C. $40
D. $4
Step-by-step explanation:
To find the unit rate, you need to divide the cost by the amount.
A. $25/5 = $5 for a movie ticket
B. $35/5 = $7 for one yard
C. $240/6 = $40 for a calculator
D. $8/2 = $4 for a can of tuna
How do you divide fast without a calculator?
Answers
The simplest way to perform a division is long division and synthetic division.
What is division?
Division in mathematics is the process of dividing an amount into equal parts. For instance, we may split a group of 20 people into four groups of 5, five groups of 4, and so on.
There are two methods to perform division:
Long division: The mathematical procedure for splitting big numbers into more manageable groups or sections is known as long division. A difficulty can be solved by breaking it down into manageable parts. Dividends, divisors, quotients, and remainders all exist in long divisions.
Synthetic division: In algebra, synthetic division is a technique for manually dividing polynomials according to Euclid, requiring less writing and calculation than long division. Although the approach can be applied to division by any polynomial, it is often taught for division by linear monic polynomials.
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If you are Hispanic what is your most recent favorite novela ? And if you aren't what is your favorite movie?
Answers
Answer:
Step-by-step explanation:
Coco
My fav movie?
Space Jam 2
Prob since I’ma basketball fan :)))
What is the height of the cylinder? The figure is not drawn to scale.
V = 282.7 in²
18 in
11.3 in
7.2 in
3.6 in
Answers
The height of the cylinder is \(3 inch\)
How can the height of the cylinder be found?Based on the attached figure,
Volume of the cylinder = 282.7 square inches
Radius of the cylinder =5 inches.
The height of the cylinder = ?
The volume of the cylinder can be found with the formula as :
\(V=pi r^{2} h\)
\(h=\frac{V}{pi r^{2} } \\\\h = \frac{282.7}{3.142 * 5^{2} } \\\\=3 inch\)
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