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3 years ago

What is the surface area of the regular pyramid below?

Mathematics

1 answer:

makkiz [27]3 years ago

4 0

D. 756 units^2

Step-by-step explanation:

there ya go :)

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What is the height of the cylinder had a volume of 144pi and radius of 2 inches

Reptile [31]

Answer:

Step-by-step explanation:

$V=h\pi r^2\\ \\ h=\frac{V}{\pi r^2}\ V=144\pi \ r=2in\\ \\ h=\frac{144\pi }{\pi 2^2}\\ \\ h=\frac{144}{4}\\ \\ h=36in$

3 0

3 years ago

A line goes throught the points (0,-9) and (-9,-72)<br><br>what is the slope of the line?

Vladimir [108]

To find the slope(m) of the line, you use the slope formula:

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

And you plug in the points into the equation.

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m = \frac{-72-(-9)}{-9-0}$

$m = \frac{-72+9}{-9-0}$

$m = \frac{-63}{-9}$

m = 7

5 0

3 years ago

Read 2 more answers

Lines l and m are parallel. If the m∠1 = 45 degrees, which of the following angles does not measure 45 degrees? ∠2 ∠4 ∠7

Elena L [17]

Answer:

whats the answer

Step-by-step explanation:

6 0

3 years ago

HELP MEEEE<br> How do you add and subtract functions?

nata0808 [166]

Answer:

To add or subtract functions, just add or subtract the values at each point where it makes sense. If the functions are given by formulas, you can just add or subtract the formulas (it doesn't matter whether you plug in values before or after).

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the measure of each interior angle of a regular 14-gon

Triss [41]

<h2>Hello!</h2>

The answers are:

Question 7:

154.29°

Question 8:

Yes, because the opposite sides are congruent.

For question 7:

We know that the sum of all interior angles of any polygon is determined by the following formula:

$Angles=180*(sides-2)$

Therefore the sum of all interior angles of a 14-gon is equal to 2160°, so, the measure of each interior angle is given by the following calculation:

$14-gon=(14-2)*180\°=2160\°$

Each interior angle is equal to:

$\frac{2160\°}{12}=154.29\°$

For question 8:

We know that a quadrilateral is a parallelogram when the opposite sides are parallel or congruent.

From the statement we know that:

BE≅ED

and

AE≅EC

So, we can assume that the triangles formed by the sides BE and AE, and the sides EC and ED, are also congruent, meaning that the opposite sides BA and CD are congruent, so, the quadrilateral is a parallelogram.

Have a nice day!

4 0

3 years ago