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1 year ago

What is the circumference of a circle with a diameter of 45 centimeters?

Mathematics

2 answers:

madam [21]1 year ago

6 0

Circumference, C = πd
d = diameter.

C = π*45

C = 45π

C ≈ 45*3.142

C≈ 141.39

C ≈ 141.4

Option D.

zysi [14]1 year ago

3 0

It is 141.4 centimetres. This is because the circumference is obtained by multiplying pi with the diameter.

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Round 8.1 down to 8
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8(4)= 32

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1 year ago

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1 year ago

A 3-gallon tub of ice cream yields about 90 scoops of ice cream. There are roughly 3785 cubic centimeters in 1 gallon. Determine

ASHA 777 [7]

Answer:

The radius of the scoop is r = 3.1 cm

Step-by-step explanation:

Since 3 gallons yields 90 scoops, and 1 gallon = 3785 cm³.

3 gallons = 3 × 3785 cm³ = 11355 cm³

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r = ∛(3× 126.2 cm³/4π)

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1 year ago

According to a survey by Bankrate, of adults in the United States save nothing for retirement (CNBC website). Suppose that adult

mezya [45]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Yes the selection of 15 is a binomial experiment

$P(r = 15) = 3.2768 *10^{-11}$

$P(r = 5) = 0.1032$

$P(r \ge 1 ) = 0.9648$

Step-by-step explanation:

considering question a

Generally for and experiment to be binomial

The trial must be independent

There must be only two outcomes for each trial

Generally given that that the 15 adults are selected randomly which mean that the trials will be independent and that desired outcome is ''ether the adult save something for retirement or the adult saves nothing for retirement ''

Then we can say that the selection of 15 adult at is a binomial experiment

Considering question b

Generally the probability that all of the adults save nothing for retirement is mathematically represented as

$P(r = n) = ^nC_r * p^r * q^{n-r}$