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goblinko [34]
2 years ago
12

Suppose y varies directly with x, and y = -4 when x = 25. What is x when y = 10? SHOW ALL YOUR WORK HERE OR YOU WON'T GET CREDIT

!
Mathematics
1 answer:
Stolb23 [73]2 years ago
6 0

Answer:

x = -62.5

Step-by-step explanation:

y = kx

-4 = k(25)

k = -4/25

y = (-4/25)x

10 = (-4/25)x

x = 10 × 25/-4

x = -62.5

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Can someone help me with this question please
Valentin [98]
It’s for sure B the formula for circumference is
Pi times the diameter and the diameter is double the radius so it’s pi multiplied by 8
8 0
3 years ago
Please help, love you
ExtremeBDS [4]

Answer:

162

Step-by-step explanation:

Note that you can split the given shape into a triangle and a rectangle.

Area of rectangle = base x height

base = 12

height = 9

Plug in the corresponding numbers into the corresponding variables:

Area of rectangle = 12 x 9

                             = 108

Area of triangle = (base x height)/2

base = 12

height = 9

Area of triangle = (12 x 9)/2

                          = (108)/2

                          = 54

Next, add the two areas together to get the full area:

108 + 54 = 162

162 is your answer.

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5 0
2 years ago
Solve for x to the nearest degree.
VikaD [51]

Answer:

Using Pythagoras Theorem, squareroot 15^2 - 5^2.

After you found the opposite length, use the cosine rule to find angle x.

5 0
2 years ago
Each serving of a pancake recipe calls for 1/4 cup of flour. How many servings can be made with 2 cups of flour?
Tpy6a [65]

Answer:

The correct answer is 8 servings of pancakes.

Step-by-step explanation:

If each serving of pancakes calls for 1/4 cup of flour, to find how many servings can be made with 2 cups of flour, we should divide 2 cups by 1/4 cup.

To do this, we can first convert 1/4 to a decimal by dividing the numerator by the denominator.  

1/4 = 0.25

Next, we can go ahead with the division.

2 / 0.25 = 8

Therefore, 8 servings of pancakes can be made with 2 cups of flour.

Hope this helps!

6 0
3 years ago
In the United States, the mean age of men when they marry for the first time follows the normal distribution with a mean of 24.6
Sedbober [7]

Answer:

z= \frac{25-24.6}{\frac{2.8}{\sqrt{66}}}=1.16

So we want to find this probability:

P(z

And using the normal standard distirbution or excel we got:

P(z

Step-by-step explanation:

Let X the random variable that represent the age of men married of a population, and for this case we know the distribution for X is given by:

X \sim N(24.6,2.8)  

Where \mu=24.6 and \sigma=2.8

We are interested on this probability

P(\bar X

The sample size is n =66. We can use the z score to solve this problem:

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

If we find the z score for 25 we got:

z= \frac{25-24.6}{\frac{2.8}{\sqrt{66}}}=1.16

So we want to find this probability:

P(z

And using the normal standard distirbution or excel we got:

P(z

5 0
3 years ago
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