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vfiekz [6]
3 years ago
15

It’s not C and I suck at math can someone plz help me on this plz and thx

Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0

Answer:

a

Step-by-step explanation:

The volume (V) of a cone is calculated as

V = πr²h ( r is the base radius and h the perpendicular height )

To calculate the height h use the right triangle formed by the radius and the inclined side.

Given diameter = 22, then r = 22 ÷ 2 = 11 cm

Using Pythagoras' identity on the right triangle, then

h² + 11² = 61² , that is

h² + 121 = 3721 ( subtract 121 from both sides )

h² = 3600 ( take the square root of both sides )

h = \sqrt{3600} = 60

Thus

V = π × 11² × 60

   = 3.14 × 121 × 60 ≈ 22796.4 cm³ → a

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We add all the numbers together, and all the variables

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We get rid of parentheses

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3 years ago
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Lyrx [107]
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Factor a trinomial.
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Ignore the factor 2.
Subproblem 1:

Set the factor '(-5 + -1x)' equal to zero and attempt to solve:

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-5 + -1x = 0

Solving
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Move all terms containing x to the left, all other terms to the right.

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Divide each side by '-1'.
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Simplifying
x = -5

Subproblem 2:

Set the factor '(9 + -1x)' equal to zero and attempt to solve:

Simplifying
9 + -1x = 0

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9 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-9' to each side of the equation.
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Divide each side by '-1'.
x = 9

Simplifying x = 9

Solution
x = {-5, 9}</span>
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