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3 years ago

I need da answers please :)

Mathematics

2 answers:

stealth61 [152]3 years ago

5 0

Answer:

Answer: 20%

To find the percentage of a fraction just do the top number divided by the bottom you get 0.2 and 0.2 is equal to 20% so 20% is the answer hope that helps!

KIM [24]3 years ago

5 0

Answer:

1/5 = 20%

Step-by-step explanation:

1/5 = 1 ÷ 5 obviously

So figure out 1 ÷ 5

Your answer would be 0.2

Now, when converting a number to a percent you would multiply it by 100

0.2 × 100 is

20%

I hope I helped! :)

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Please help! I will give Brainliest!<br> Who is correct?

katrin [286]

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4.5+8.5=13 which is less than 14.

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3 years ago

Ernesto has $20 in an account. The interest rate is 10% compounded annually.

chubhunter [2.5K]

The interest Ernesto will earn in 1 year to the nearest cent is 2200 cents.

<u>Given the following data:</u>

Principal = $20.

Interest rate = 10%

Time = 1 year.

To calculate how much interest Ernesto will earn in 1 year to the nearest cent:

<h3>How to calculate compound interest.</h3>

Mathematically, compound interest is given by this formula:

$B=P(1+r)^t$

<u>Where:</u>

B is the balance.

P is the principal or starting amount.

R is the interest rate.

T is the time measured in years.

Substituting the given parameters into the formula, we have;

$B=20(1+0.1)^1\\\\B=20(1.1)$

B = $22.

<u>To cents:</u>

B = $22 \times 100$

B = 2200 cents.

Read more on interest here: brainly.com/question/24341207

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2 years ago

Consider the e-billing case. The mean and the standard deviation of the sample of n = 65 payment times are xbar= 18.4730 and s =

Travka [436]

Answer: The null and the alternative hypotheses are given below:

$H_{0}:\mu=18.6$

$H_{a}:\mu$

Under null hypothesis, the test statistic is:

$z=\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

$=\frac{18.4730-18.6}{\frac{3.9045}{\sqrt{65}} }$

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Now we have to find the left tailed critical value at 0.01 significance level using the standard normal table.

The critical value is:

$z_{critical}=-2.33$

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3 years ago

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