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Gwar [14]
3 years ago
11

Grade 8 unit rate pls add explanation

Mathematics
1 answer:
mote1985 [20]3 years ago
4 0

Answer:

Is it .04

Step-by-step explanation:

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A circle has a sector with area 33 pi and a central angle of 11/6 pi radians. What is the area of a circle?
Mashutka [201]

Answer:

36π

Step-by-step explanation:

The area of a circle is given as:

A = \pi r^2

where r = radius of the circle

The area of a sector of a circle is given as:

A_s = \frac{\alpha }{2\pi} * \pi r^2

where α = central angle in radians

Since \pi r^2 is the area of a circle, A, this implies that:

A_s = \frac{\alpha }{360}  * A

A circle has a sector with area 33 pi and a central angle of 11/6 pi radians.

Therefore, the area of the circle, A, is:

33 \pi = \frac{\frac{11 \pi}{6} }{2 \pi} * A\\\\33\pi = \frac{11}{12} * A\\\\=> A = \frac{33\pi * 12}{11}\\ \\A = \frac{396 \pi}{11} \\\\A = 36\pi

The area of the circle is 36π.

5 0
3 years ago
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Belinda runs 8 kilometers in 60 minutes. At this rate, how long would it take her to run 2 kilometers?
DiKsa [7]

Answer:

15 minutes

Step-by-step explanation:

4 0
2 years ago
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I need help to solve the system of equation by elimination.<br><br>x - 2y = -10<br>-5x + 4y = 14
Agata [3.3K]
Your answer is an ordered pair (2,6)
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3 years ago
What is the product? Enter your answer as a fraction, in simplified form, in the box. 38⋅(−36)
valina [46]
If you multiply 38*(-36) you would get -1368. And to convert that into a fraction it could be -1368/1, -13680/10, etc.
8 0
3 years ago
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Given the following expressions: A. 53 • 5–4 B. 3^5/3^-6 C.(1/4)^3 • (1/4)^2 D. (-7)^5/(-7)^7 Part 1: Use operations of exponent
White raven [17]

Part 1:

A.53 =53

B.3^5/3^-6 =177147

C.(1/4)^3 • (1/4)^2 = 1 /1024

D.(-7)^5/(-7)^7 = 1/49

I tried my best for part 2 but i'm pretty sure it's not right. I think 1/1024 and 1/49 has a value between 0 and 1

6 0
3 years ago
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