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Lera25 [3.4K]
3 years ago
5

What is -5(3times-7+4y)

Mathematics
2 answers:
Mrac [35]3 years ago
7 0

Steps To Solve:

-5(3 * -7 + 4y)

~Solve what's in parenthesis

-5(-21 + 4y)

~Distributive Property

105 - 20y

Hope This Helped! Good Luck!

Vaselesa [24]3 years ago
3 0

Answer:

-20y + 105.

Step-by-step explanation:

-5(3*-7+4y)

= - 5 * ( 4y - 21)

= -20y + 105.

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Answer:

V = 115.5 cubic yards

Step-by-step explanation:

V (cone) = 1/3πr²h

just substitute given values to get:

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2 years ago
ASAPPP!!!! HELP I WILL GIVE 100POINTS AND BRAINLIST Question 9 (Essay Worth 10 points)
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Answer:

Part A)

The <em>x-</em>intercepts are (-1/4, 0) and (4, 0).

Part B)

The vertex is a maximum because the leading coefficient is negative.

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Part C)

We can plot the zeros and the vertex, and connect them with a curve.

Step-by-step explanation:

The function given is:

f(x)=-16x^2+60x+16

Part A)

To find the <em>x-</em>intercepts of the function, set the function equal to 0 and solve for <em>x: </em>

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Part B)

Note that the leading coefficient of our function is negative.

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The vertex is given by:

\displaystyle \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)

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Part C)

Since we already determined the zeros and the vertex, we can plot the two zeros and the vertex and draw a curve between the three points.

The graph is shown below. Again, to do this by hand, simply plot the three points and connect them with a parabola. If necessary, we can also find the <em>y-</em>intercept.

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