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goldfiish [28.3K]
3 years ago
7

HELPPPPP!!!!! PLSSSS!!! 10 POINTS!

Mathematics
2 answers:
Serga [27]3 years ago
6 0

Answer:

divide 81 by pi and then by 2

Step-by-step explanation:

Mandarinka [93]3 years ago
6 0

Answer:

C= 2pi x R

81= 6.28 x r

81 % 6.28 = r

r =12.89

Step-by-step explanation:

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Distribute and simplify these radicals. square root of 60
PolarNik [594]

Answer:

2 sqrt(15)

Step-by-step explanation:

sqrt(60) = sqrt(4*15) = 2 sqrt(15)

4 0
3 years ago
How to write a fraction or mixed number as a decimal pre algebra?
Oksanka [162]
If you had the number 4 1/4 you would divide the numerator (1) by the denominator (4) and then take the decimal number (0.25) you get and add the decimal to the whole number on your mixed number (4+0.25) and that would give you the decimal.
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3 years ago
Which is a better price: 5 for $1.00, 4 for $0.85, 2 for $0.25, or 6 for $1.10?
Angelina_Jolie [31]

Answer:

2 for $0.25

Step-by-step explanation:

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4 0
4 years ago
Please answer this question. I’m giving brainliest. Both of them, please :)
Solnce55 [7]

Answer: where's the question

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
At first it decreased by 60 percent and it increased by 80 percent
storchak [24]

The quantity reported an <em>equivalent net</em> percentage change of 28 percent.

<h3>How to calculate the net change of a quantity in percentages</h3>

In this problem we must determine the <em>simple</em> percentage change equivalent to two <em>consecutive</em> percentual changes. The formula that describes the situation is:

1 + r/100 = (1 - 60/100) · (1 + 80/100)

1 + r/100 = 72/100

r/100 = - 28/100

r = - 28

The quantity reported an <em>equivalent net</em> percentage change of 28 percent.

<h3>Remark</h3>

The statement is incomplete. Complete form is presented below:

A quantity is changing. At first it descreased by 60 percent and it increased by 80 percent. What is net change of the quantity in percentage?

To learn more on percentages: brainly.com/question/13450942

#SPJ1

5 0
2 years ago
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