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kati45 [8]
3 years ago
9

What is the circumference of diameter of 2cm​

Mathematics
1 answer:
kicyunya [14]3 years ago
3 0

a circle with a diameter of 2cm has a circumference of 6.28 cm

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A ball is thrown upward from the top of a 40 foot high building at a speed of 80 feet per second. The ball's height above
tekilochka [14]

it takes 5 seconds to reach a height of 40 ft. and It takes 2.5 seconds to reach maximum height.

Let h(t) represent the height of the ball at time t.

Given that the height is given by:

h(t) = -16t² + 80t + 40

1) For the ball to reach a height 0f 40 ft, h(t) = 40, hence:

40 = -16t² + 80t + 40

16t² - 80t = 0

t(t - 5) = 0

t = 0 or t = 5

Hence it takes 5 seconds to reach a height of 40 ft.

2) The maximum height is at h'(t) = 0,

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It takes 2.5 seconds to reach maximum height.

Find out more at: brainly.com/question/11535666

5 0
3 years ago
During a promotional weekend a state fair gives a free admission to every 175th Person who enters the fair on Saturday there wer
emmasim [6.3K]

Answer:

69

Step-by-step explanation:

If every 175th person gets free admission, that means

175th

175 * 2 = 350th

175 * 3 = 525th

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This basically means <em><u>"how many 175s are there is 6742 (for first day) and 5487 (for 2nd day)?"</u></em>

<em><u /></em>

We would need to divide and see the WHOLE number, not the fractional(decimal) amount remaining. So

<u>1st Day:</u>

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<u>2nd Day:</u>

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This means 31 people will get free admission

In the 2 days, total of 38 + 31 = 69 people will get free admission

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3 years ago
ASAP PLSSS help me with this math question
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Answer is D

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just took the test and got it right

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Geometric mean between 9 and 36
nlexa [21]
I've actually just learned this. We would set up the proportion as X/9=36/X so after we cross multiply we get x^2=324. Then we find the square root of both sides to simplify. And using my calculator the square root of x^2 is just x. And the square root of 324 is 18. So the final answer is x=18 or the geometric mean is 18.
4 0
3 years ago
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