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Leni [432]
3 years ago
9

An escalator lifts people to the second floor of a building, 21 ft above the first floor. The escalator rises at a 30° angle. To

the nearest foot, how far does a person travel from the bottom to the top of the escalator?

Mathematics
1 answer:
DerKrebs [107]3 years ago
3 0

Answer:

42

Step-by-step explanation:

Sin 30=21/H

H=21/sin 30

H= 42

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The circumference of Circle K is $\pi$ . The circumference of Circle L is $4\pi$ . Two circles, one labeled "Circle K" and the o
timurjin [86]

Answer:

Step-by-step explanation:

Given the circumference of Circle K = π

circumference of Circle L = 4π

Ratio of their circumferences = Ck/Cl

Ratio of their circumferences = π/4π

Ratio of their circumferences = 1/4 = 1:4

For their radii

C = 2πr

for circle k with circumference π

π = 2πrk

1 = 2rk

rk = 1/2

for circle l with circumference 4π

4π = 2πr

4 = 2r

r = 4/2

rl = 2

ratio

rk/rl = 1/2/2

rk/rl = 1/4 = 1:4

for the areas

Area of a circle = πr²

for circle k

Ak = π(1/2)²

Ak = π(1/4)

Ak = π/4

for circle l

Al = π(2)²

Al = 4π

Ratio of their areas

Ak/Al = π/4/(4π)

Ak/Al = π/16π

Ak/Al = 1/16 = 1:16

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7x - 3y + 12z This is algebra and I’m really bad at it
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Wait, this is simplified because there are no common terms.
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The area of the shaded region in the shape to the right
larisa86 [58]
Oof this one is hard I think it’s 20 mm but I’m not sure
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marysya [2.9K]

Answer:

B

Step-by-step explanation:

it's basically 2+7

3 0
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PLEASE HELP I HAVE 5 MIN TO TURN THIS IN!!!!
Lady_Fox [76]

Answer:

  • False

Step-by-step explanation:

<u>Perimeter of garden A  is </u>

  • P = 2(w + l) = 2( 2x - 3 + 5(2x - 3)) = 24x - 36

<u>Perimeter of garden B  is </u>

  • 5x + 5 + 4x + 2 + 8x - 8 = 17x - 1

<u>Sum of perimeters:</u>

  • 24x - 36 + 17x - 1 = 41x - 37

The statement 2 is FALSE as number we got is different from the one in the statement

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3 years ago
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