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gtnhenbr [62]
3 years ago
13

Please explain also! I am not here just to get answers, I am here to understand. Thank you!

Mathematics
1 answer:
kolezko [41]3 years ago
3 0

To help solve this, we need to use the slope formula.

(y2 - y1) / (x2 - x1). We get these values by picking two points on a line.

For JL, we will pick points (-5, -3) and (-2, -4).

y1 = -4

y2 = -3

x1 = -2

x2 = -5.

Let's plug these into our formula.

(-3) - (-4) / (-5) - (-2) = -1/3

For LN, we will pick points (-2, -4) and (7, -7).

y1 = -7

y2 = -4

x1 = 7

x2 = -2.

Lets plug these values into our equation.

(-4) - (-7) / (-2) - (7) = -1/3

Therefore,

(-3) - (-4) / (-5) - (-2) = (-4) - (-7) / (-2) - (7)

The correct answer is G.

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Answer:

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Since we've gotten the value for y, substitute the value into eqn 1

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Make y the subject of the formula

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4y = (9 + 75)/ 9

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To get y, divide both sides by 4

4y/4 = 84/9 / 4/1

y =

Note : when division changes to multiplication, it always be in its reciprocal form

y = 84/9 / 1/4

y = 84 * 1 / 9 *4

y = 84/ 36

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we know that

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substitute equation A in equation B

Vpyramid=\frac{1}{3}Vprism

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