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2 years ago

I need help with both of these questions..

Mathematics

1 answer:

aleksandr82 [10.1K]2 years ago

4 0

Answer:

The Coefficient for the first question is 7

For the Next Question the 55h stands for how many hours Damon has been driving already, and the 125 is how many miles he was driving per hour.

Step-by-step explanation:

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How to find the total surface area of a rectangular prism?

k0ka [10]

If the length is taken as l , height is taken as h and breadth is taken as b . then

Area of the rectangular prism= 2( (l*b) + (b*h) + (h*l) )

hope that helps

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2 years ago

Helen has 48 cubic inches of clay to make a solid square right pyramid with a base edge measuring 6 inches. Which is the slant h

Nikitich [7]

Answer: 5 inches

Step-by-step explanation:

Given: Volume of clay = 48 cubic inches

If we make a solid square right pyramid with a base edge a= 6 inches.

Then its base area = $a^2=6^2=36\ inches^2$

we know that volume of square right pyramid= $\frac{1}{3}\times\ a^2h$

Therefore, volume of square right pyramid made by all of clay= $\frac{1}{3}\times\ a^2h$ =48 cubic inches

$\Rightarrow\frac{1}{3}\times\ (36)\times\ h=48\\\Rightarrow12h=48\\\Rightarrow\ h=4\ inches.....\text{[Divide 12 on both sides]}$

Now, slant height $l=\sqrt{(\frac{a}{2})^2+h^2}$

$\\\Rightarrow\ l=\sqrt{3^2+4^2}\\\Rightarrow\ l=\sqrt{9+16}\\\rightarrow\ l=\sqrt{25}\\\Rightarrow\ l=5$

The slant height of the pyramid if Helen uses all the clay=5 inches

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I’m not positive but i think it’s 36x^2 -1

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Which professionals most directly use geometry in their work A) accountants B)astronomers C)judges D)pharmacist E) politicians

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Astronomers deal with objects in space, so it's most likely they would use geometry to determine how far they are, how big they are, etc.

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3/8 of the rows are empty. The three rows that are empty (3) would be in the numerator while the total amount of rows (8) would be in the denominator.

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