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pentagon [3]
3 years ago
7

Can someone help please

Mathematics
2 answers:
Goryan [66]3 years ago
8 0
The formula for S.A. of a cylinder: S.A. = 2πr² + 2πrh (given).

r is radius, which is half the diameter. The diameter is 6 in, thus the radius is 3 in. h is height; the height of this cylinder is 8 in. Let's plug in our numbers and solve.

S.A. = 2π3² + 2π(3)(8)
S.A. = 2π9 + 2π24
S.A. = 18π + 48π
S.A. = 66π

Since the question says not to round, we must leave the answer in terms of pi.

Answer:
S.A. = 66π
tresset_1 [31]3 years ago
6 0
I dont really know but my guess is 48?

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Tim installs 50 square feet of his floor in 45 minutes. At this rate, how long does it take him to install 495 square feet?
77julia77 [94]

Answer:

99.5 minutes

Step-by-step explanation:

50=45

495=?

495×45÷50=99.5

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3 years ago
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Please help me solve this step by step please :(
Ratling [72]

Answer:

B) 60.21 ft²

Step-by-step explanation:

Area of a triangle = 1/2bh

You can‘t used mixed measurements (feet and inches), so you have to convert each length to inches

8’6”=102’

14’2”=170’

Now find the area

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This is one of the answers, but the quetion asks how many quart feet you need.

So, convert it back to feet.

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(You could also have converted the two lengths to feet. 8’6” = 8.5 ft.  14’2” = 14.16666666.  This way would probably have been faster.

1/2 x 8.5 x 14.166666 = 60.20833333)

3 0
3 years ago
The boston celtics have won 16 nba championships over approximately 50 years. Thus it may seem reasonable to assume that in a gi
Nutka1998 [239]

We have been given that The boston celtics have won 16 nba championships over approximately 50 years. Therefore, it can be concluded that in any given year the probability of celtics winning the title will be p = 16/50 = 0.32

For Celtics to win eight straight championships in 1959, we will be required to multiply the probability of winning championship in one year to itself 8 times.

Therefore, the required probability is:

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Therefore, the required probability is almost 0.00011.

8 0
3 years ago
Need help on this please this one is hard for me
pshichka [43]

9514 1404 393

Answer:

  y = -7x

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The line goes through the origin, so the y-intercept is b=0.

The line goes through the point (1, -7), so has a "rise" of -7 for a "run" of 1. The slope is ...

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Then the slope-intercept form equation is ...

  y = mx + b

  y = -7x

6 0
3 years ago
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