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WINSTONCH [101]
2 years ago
13

NASA is painting the nose cone of a sounding rocket with a special sealant which reduces the air-drag on the rocket. If they nee

d to do two coats of the sealant, how many square feet are they painting? Use π = 3.14.
Mathematics
1 answer:
crimeas [40]2 years ago
4 0

Answer:

The formula for the lateral surface area (LSA) of a right cone is:

LSA = π x r x l

where: r as radius, and l as the slant height of the cone

If NASA need to do two coats of the sealant, the number of square feet that they are painting is: 2 x LSA = 2 x π x r x l

Step-by-step explanation:

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2 years ago
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Daniel [21]

Answer:

y=\frac{3}{2}x-5

Step-by-step explanation:

There are a couple of ways to solve this, depending on what you already know.

Point-Slope Form

y-y_1=m(x-x_1)  where <em>m</em> is the slope and (x_1, y_1) is a point on the line.

First, calculate the slope using the two given points (x_1, y_1), (x_2, y_2).

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Fill in the point-slope pattern

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There's the equation in slope-intercept form (y=mx+b).

Slope-Intercept Form

Use y=mx+b directly.

Find the slope just like the above, so m=\frac{3}{2}.

Now, plug one of the points (either one!) together with <em>m</em> into

y=mx+b\\-2=\frac{3}{2}(2)+b \\ -2=3+b \\ b=-5

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y=\frac{3}{2}x-5

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