2 years ago

What is the radius of a circle that has circumference of 81pi square inches?

Mathematics

1 answer:

Troyanec [42]2 years ago

8 0

I think the answer is 18 in

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What is the approximate value of x. Enter only a numeric answer rounded to the nearest tenth

11111nata11111 [884]

Answer:

14.9 degrees

Step-by-step explanation:

For this problem you can use Tan∅=o/a and solve for the angle:

15.7 / 59 = 0.2661

Then use inverse tangent of 0.2661 to get 14.9.

7 0

3 years ago

How could you solve for x in the problem 3x+7=-x-1

lukranit [14]

Hello there!

$3x+7=-x-1\\$

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 7 from both sides of the equation.

$3x+7-7=-x-1-7$

Simplify

$3x=-x-8$

Then you add by x from both sides of the equation.

$3x+x=-x-8+x$

Simplify

$4x=-8$

Divide by 4 from both sides of the equation.

$\frac{4x}{4}=\frac{-8}{4}$

Simplify it should be the correct answer.

$x=-2$

Answer⇒⇒⇒x=-2

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

7 0

2 years ago

Explain two ways you could solve 20 = 5(−3 + x

emmasim [6.3K]

Answer:

7 is x

Step-by-step explanation:

1) Divide both sides by 5 to give

4=-3+x

x=4+3

x=7

2) Multiply 5 with the RHS (Right Hand Side) to give

20=-15+5x

20+15=5x

35=5x

x=7

7 0

2 years ago

Read 2 more answers

If f(x)=2xsquared-10, find f(5) A.90 B.10 C.7.5 D.40

inessss [21]

Answer:

D.40

Step-by-step explanation:

2(5)squared -10

2(25)-10

50-10=40

5 0

3 years ago

Which expression can be used to model the phrase “the sum of three and a number”?

Airida [17]

Answer:

3+x

Step-by-step explanation:

because the word sum is only used in addition.

hope it helps! :)

5 0

2 years ago