MATHEMATICS
HIGH SCHOOL

Answer: The simple interest formula is A = P(1+rt) where P is your principal, or your initial amount, r is your rate and t is your time. Substitute the knowns into the equation.We get:

A = 100(1+0.15*15) = 325

Hopes this helps!

A = 100(1+0.15*15) = 325

Hopes this helps!

MIDDLE SCHOOL

PLEASE HELP ASAP Three friends entered a contest to count the number of jelly beans in a jar. The table shows their guesses of the number of jelly beans in the jar. There were actually 950 jelly beans in the jar.

Which statements are true?

Name Number guessed

Brandon 991

Li Mei 939

Jodi 976

Choose exactly two answers that are correct.

A. Li Mei’s estimate had about a 1.2% error.

B.Jodi had the highest percent error.

C. Jodi’s estimate had about a 26% error.

D. Brandon’s estimate had about a 4.3% error.

A. and D. For A multiply 950 by .012 and you get 11 (rounded) meaning she was off by about 11, which she was. You can instantly rule B out because Brandon was the furthest off not Jodi. For C multiply 950 by .26 and you get 247, she was not off by 247, she was off by 26, so that's wrong. And for D multiply 950 by .043 and you get 41 (rounded) which means he was off by 41, which he was. And there's your answer A and D are true :) Hope this helped

HIGH SCHOOL

Jack is learning to play the piano. Which has 88 keys. If there are 12 unique keys in each octave. How many complete octavs are on the piano.

To find the amount of complete octaves there are on the piano, you must first divide 88/ 12; which is 7.333. Since the question is asking for the amount of complete octaves, you must round down to 7. Your final answer is 7 complete octaves.

COLLEGE

How many degrees are in an angle that turns through 3/4 of a circle?

The answer is 270 degrees.

Since a circle has a full degree measure of 360 degrees, we can multiply 360 by 3/4 to result in 270 degrees.

Hope this helps.

Since a circle has a full degree measure of 360 degrees, we can multiply 360 by 3/4 to result in 270 degrees.

Hope this helps.

MIDDLE SCHOOL

How do turn a decimal to a fraction

If the decimal is in the tenths then the denominator would be like 10. Ex: Decimal: 0.2 Fraction- 2/10. and the same with hundredths, thousandths, etc.

Step 1: Write down the decimal divided by 1, like this: decimal 1 Step 2: Multiply both top and bottom by 10 for every number after the decimal point. (For example, if there are two numbers after the decimal point, then use 100, if there are three then use 1000, etc.)Step 3: Simplify (or reduce) the fraction