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2 years ago

Use the Pythagorean theorem to solve for x

Mathematics

1 answer:

Andre45 [30]2 years ago

5 0

Answer: 15

Step-by-step explanation:

12^2 + 9^2 = 225

square root of 225 = 15

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What is the exact circumference of the circle?

fredd [130]

Data:

Formula: diameter = 2*radius

Formula: (Circle length)
 $C = 2* \pi *r$

Solving: Using the data
diameter = 2*radius
20 = 2*r
2r = 20
$r = \frac{20}{2}$
$\boxed{r = 10\:ft}$

Now, replace in the circumference length formula
 $C = 2 \pi *r$
$C = 2 \pi *10$
$\boxed{\boxed{C = 20 \pi \:ft}}\end{array}}\qquad\quad\checkmark$

Answer:
The exact circumference of the circle is $20 \pi \:ft$

7 0

2 years ago

How to write3.repeating 7 as a mixed number

ki77a [65]

Hey there! I'm happy to help!

Let's call our fraction x.

x=3.777......

We want to get rid of the repeating stuff. If we multiply our fraction by 10, we get 10x=37.7777.

We see that if we subtract x from 10x, the repeating numbers will be cancelled out. Let's do this.

10x=37.7777

x=3.77777

9x=34

We divide both sides by 9.

x=34/9=3 7/9.

Have a wonderful day! :D

6 0

3 years ago

for school joey wants to make spirit ribbons that are each 6 3/4 inches in length he has a piece of ribbon that is 97 inches in

defon

6.75 x 14 will get you 94.5 and if you add another 6.75 you will go to high for your goal so that answer is 14

4 0

2 years ago

Read 2 more answers

Evaluate the expression, below, when a = 2 and b = 5. (3 + a)² • (4 – b) + √36

stellarik [79]

Answer:

-19

Step-by-step explanation:

1) substitute a with 2 and b with 5

(3 + 2)^2 * (4-5) + √36

2) solve the brackets and the square root

(5^2) * (-1) + 6

3) solve the power

25 *(-1) + 6

4) solve the multiplication

-25 + 6

5) solve the sum

- 19

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2 years ago

A cable television company randomly calls 200 customers and asks them if they are satisfied with their service

BigorU [14]

What is the question?

4 0

3 years ago