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butalik [34]
3 years ago
12

Please explain if possible

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

-5x^2 - 25x + 3 (Answer B)

Step-by-step explanation:

Carry out the indicated multiplication:

2x^2 - 12x - 7x^2 - 13x + 3

Now rearrange these terms in descending order by powers of x:

2x^2 - 7x^2 - 12x - 13x + 3

Combining like terms, we get:

-5x^2 - 25x + 3 (Answer B)

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saw5 [17]

5.7t < 420  divide both sides by 5.7

5.7      5.7  

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5 0
4 years ago
Read 2 more answers
The formula for the volume of a cone is V = jarh, where V is the volume, r is the radius, and h Is the heightWhat is the volume
olga nikolaevna [1]

Given:

The radius, r=4x

The height,

h=21xy^2

To find the volume of the cone:

The volume of the cone formula is,

V=\frac{1}{3}\pi r^2h

Substitute the values of r and h in the above formula we get,

\begin{gathered} V=\frac{1}{3}\pi\times(4x)^2\times21xy^2 \\ =\frac{1}{3}\pi\times16x^2\times21xy^2 \\ =\pi\times16x^2\times7xy^2 \\ =112\pi x^3y^2 \end{gathered}

Hence, the volume of the cone is

V=112\pi x^3y^2

Thus, the correct option is option D.

7 0
1 year ago
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FromTheMoon [43]
X + 2/3 = -2(4/5x-7)
Is equivalent to -2(x+2/3)=4/5x-7
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8 0
4 years ago
Please Help this is to help out a friend...
Gwar [14]

Answer:

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Write the equation of a line through the two points in (-2,8) and (5,-1)
natta225 [31]

Answer:

(-2, 8) and (5, -1)

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8 = -9/7(-2) + b

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y = -9/7x

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y = 7/9x

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3 years ago
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