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Harrizon [31]
3 years ago
8

A drum has a diameter of 10 inches. find the area of the top of the drum. use 3.14 for pi.

Mathematics
2 answers:
pickupchik [31]3 years ago
6 0

Answer: 78.5 inches

Step-by-step explanation:

Area = Pi x r x r

Diameter = 10 in

Radius = 5 in

314/100 x 5 x 5 = 314/4

314/4 = 78.5

= <u>78.5 inches</u>

icang [17]3 years ago
4 0

Answer:

My answer is 78.55

Step-by-step explanation:

I've given the steps. Hope it really helps

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Graph a line with a slope of -3 that contains the point (4, -2)
Crank

Answer:

Step-by-step explanation:

Given that

Slope m=-3

A point (x, y)=(4,-2)

Equation of a line can generally be written as

y=mx+c

Where, m is the slope

And c is the intercept on y-axis

Since we are given m=-3

Then, y=mx+c becomes

y=-3x+c

To get c, let substitute the point given, i.e x=4 and y=-2

y=-3x+c

-2=-3(4)+c

-2=-12+c

-2+12=c

c=-2+12

c=10

y=mx+c, then m=-3 and c=10

Then, the equation the line becomes y = -3x + 10

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5 0
3 years ago
A university knows from historical data that 25% of students in an introductory statistics class withdraw before completing the
Vikki [24]

Answer:

13.4%

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

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Here, n = 16, r = 2, p = 0.25, and q = 0.75.

P = ₁₆C₂ (0.25)² (0.75)¹⁶⁻²

P = 120 (0.25)² (0.75)¹⁴

P = 0.134

There is a 13.4% probability that exactly 2 students will withdraw.

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No the ratios are not equivalent.
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3 years ago
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