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dexar [7]
2 years ago
14

I need this answered asap please help

Mathematics
1 answer:
Alexeev081 [22]2 years ago
8 0

Answer:

  C.  81π cm³

Step-by-step explanation:

The volume of the cylinder is found using the volume formula:

  V = πr²h

where r is the radius and h is the height.

__

<h3>application</h3>

For the cylinder shown, the radius is r = 3 cm, and the height is h = 9 cm. Then the volume is ...

  V = πr²h = π(3 cm)²(9 cm) = 81π cm³ . . . . matches choice C

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Solve the equation using square roots. X^2+16=0
alexgriva [62]

Answer:

<u>The answer is :</u>

<u>x₁ = 4</u>

<u>x₂ = -4</u>

Step-by-step explanation:

Let's solve the equation using square roots.

X^2+16=0

x² + 16 = 0

x² = -16 (Adding 16 at both sides of the equation)

√x² = i√16 (Square root to both sides of the equation)

x = +/- 4i (Roots of the solution)

<u>x₁ = 4i</u>

<u>x₂ = -4i</u>

5 0
3 years ago
Read 2 more answers
What function is shown by the graph
Misha Larkins [42]

Answer:

B

Step-by-step explanation:

Y=3x. The slope is 3 6-(-6)/2-(-2) and the y intercept is 0.

3 0
3 years ago
1. Jane saved up 20 coins, all nickels and
kompoz [17]

Answer:

10 nickels and 10 quarters

Step-by-step explanation:

Given

Number of coins: 20

Vaiue of coins = $3.00

Required

Number of Nickels and Quarters;

<em>Let N =Nickels and Q =Quarters</em>

The total coins is represented as:

N + Q = 20

1 nickel is equivalent to $0.05 and 1 quarter is equivalent to $0.25; So

0.05N + 0.25Q = 3

Make N the subject of formula in the first equation

N = 20 - Q

Substitute this in the second equation

0.05(20 - Q) + 0.25Q = 3

1 - 0.05Q + 0.25Q = 3

Collect like terms

-0.05Q + 0.25Q = 3 - 1

0.2Q = 2

Multiply both sides by 5

5 * 0.2Q = 2 * 5

Q = 10

Recall that N = 20 - Q

N = 20 - 10

N = 10

6 0
3 years ago
Find the quotient,a. 70 /10 =a
Orlov [11]
  • The answer is 7 because 70 divided by 10 is 7
8 0
3 years ago
Please help me lol I need it picture should be below ​
musickatia [10]

9514 1404 393

Answer:

  m∠Y = 40°

Step-by-step explanation:

The sum of complementary angles is 90°. If we let s and y represent m∠S and m∠Y, respectively, the angle measures in degrees satisfy ...

  s + y = 90

  (4y -110) +y = 90 . . . . . . . . substitute for s

  5y = 200 . . . . . . . . . add 110

  y = 40 . . . . . . . divide by 5

The measure of angle Y is 40°.

4 0
3 years ago
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