2 years ago

Can y’all help me on question 20?!

Mathematics

1 answer:

Oxana [17]2 years ago

5 0

Answer:

372 miles

Step-by-step explanation:

brainliest please

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A circle with area 100 pi has a sector with a central angle of 2/5 pi radians. What is the area of the sector?

Zarrin [17]

we know that

2pi radians (full circle) has an area of-----------------> 100pi

then

(2pi/5) radians----------------------------> X

X=(2pi/5)*100pi/2pi---------> 20pi units²

the answer is

20pi units²

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3 years ago

Find the measure of a positive angle coterminal with - 240°.

Irina18 [472]

-240+360=120
The answer is 120 degrees.

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3 years ago

A sample of men's heights was taken and the mean was 68.8 inches. The standard deviation is 2.8 inches. What percent of the men

jarptica [38.1K]

Answer:

87.29%

Step-by-step explanation:

Given: Mean= 68.8 inches

Standard deviation= 2.8 inches

Now, finding the percent of the men in the sample were greater than 72 inches.

We know, z-score= $\frac{x-mean}{standard\ deviation}$

z-score= $\frac{72-68.8}{2.8}$

⇒ z-score= $\frac{3.2}{2.8} = 1.14$

∴ z-score= 1.14

Next, using normal distribution table to find percentage.

Coverting 0.8729 into percentage= $0.8729\times 100$

We get the percentage as 87.29%

Hence, 87.29% of the men in the sample were greater than 72 inches.

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3 years ago

What are the x-intercept and y-intercept of the graph of y=13x−6 ?

gtnhenbr [62]

To find the x-int., let y = 0 and solve for x: 13x = 6, so x = 6/13: (6/13, 0)

To find the y-int., let x =0 and read off the y-int: (0, -6)

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3 years ago

Read 2 more answers

Q2:

anygoal [31]

Answer: rectangular prism

Step-by-step explanation:

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3 years ago