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3 years ago

What is 0.253 as a percent

Mathematics

2 answers:

Salsk061 [2.6K]3 years ago

7 0

25.3 percent Multiply the decimal by 100 and then

UkoKoshka [18]3 years ago

5 0

.253 move the decimal 2 places to the right then you get 25.3%

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Andrew borrowed $700 from the bank to start a pressure washing business. The bank charged a simple interest rate of 7% per year.

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Answer:6%

Step-by-step explanation:

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3 years ago

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What is the area of the following circle? Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer a

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Answer:

3.14 units^2

Step-by-step explanation:

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2 years ago

Which 2 or 3 are they pls help

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The answer is B.

z x 1 = z

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2 years ago

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In a class of 100 students, 25 have hardcover and 75 students have paperback textbooks. If you randomly choose 15 students in th

Gnom [1K]

Answer:

23.72% probability that 3 of them have hardcover texts.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the students are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

If you randomly choose 15 students in this class, find the probability that 3 of them have hardcover texts.

Desired outcomes:

3 with hardcover texts, from a set of 25.

15-3 = 12 with paperback texts, from a set of 75. So

$D = C_{25,3}*C_{75,12} = \frac{25!}{3!(22)!}*\frac{75!}{12!(63)!} = 6 \times 10^{16}$

Total outcomes:

15 students from a set of 100. So

$T = C_{100,15} = \frac{100!}{15!85!} = 2.53 \times 10^{17}$

Probability:

$P = \frac{D}{T} = \frac{6 \times 10^{16}}{2.53 \times 10^{17}} = 0.2372$

23.72% probability that 3 of them have hardcover texts.

7 0

2 years ago

Last year a business earned 4.1*10^6 dollars in income.This year the business earned 2.05*10^8 dollars in income.Which best desc

jenyasd209 [6]

Answer:

This year the business earned about 50 times as much as it did last year

Step-by-step explanation:

I got this answer because you have to have the same exponents so for the last year's income the exponent is 6 so you have to raise that up to 8 so you have to move the decimal of 4.1, two places to the left which will get you 0.041 and so you divide 2.05 by 0.041 and you get 50 so 2.05 is 50 times bigger than 0.041. I hope this helped.

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3 years ago