2 years ago

Find the area of the composite shapes.

Mathematics

1 answer:

mylen [45]2 years ago

7 0

38.1372ft2

Step-by-step explanation:

lxw 6x4

$\frac{1}{2} \pi \: {r}^{2}$

add both together, your radius is half your length so half of 6ft is 3 for your radius

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Find the sum of 7a³ + 14a + 12 and -6a³ + 12a² -7

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Step-by-step explanation:

$7a^3+14a+12+(-6a^3+12a^2-7)$

$7a^3+14a+12-6a^3+12a^2-7\\a^3+12a^2+14a+5$

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2 years ago

a railroad track rises 30feet for every 400 feet of track. what is the measure of the angle of elevation of the track?

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2 years ago

What is the value of n?<br> A.81<br> B.85<br> C.38<br> D.47

Liula [17]

Answer:

Step-by-step explanation:

∠ABC= 180° -142° (adj. ∠s on a str. line)

∠ABC= 38°

∠BAC= 180° -133° (adj. ∠s on a str. line)

∠BAC= 47°

∠ACB= 180° -38° -47° (∠ sum of △)

∠ACB= 95°

n°= 180° -95° (adj. ∠s on a str. line)

n°= 85°

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2 years ago

The area of a rectangle is 82.84 square meters. If the length is 7.6 meters what is the width?

alexandr1967 [171]

The width is 10.9. When you need to find the length or width when you have the area you divide the area by given number you have so for this problem you divide 82.84 by 7.6 to get 10.9 meters.

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