2 years ago

Please answer fasttt

Mathematics

1 answer:

-BARSIC- [3]2 years ago

4 0

Answer:

7.5 lb/cu ft

Step-by-step explanation:

75 lb / 10 cu ft = 7.5 lb/cu ft

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Answer:

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Step-by-step explanation:

We first need to find the slope of the graph of the lines passing through these points using:

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The slope of the line that passes through (−12, 15) and (4, −5) is

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The slope of the line going through (−8, −9) and (16, 21) is

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The product of the two slopes is

$m_{1} \times m_{2} = - \frac{4}{5} \times \frac{5}{4} = - 1$

Since

$m_{1} \times m_{2} = - 1$

the two lines are perpendicular.

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