# Math

So this is a math quiz I took a few months ago and they said I can redo it, but I have to explain why the correct answer is correct... And idk.

Which equation represents 15 more than r is 61?

The answer is r + 15 = 61 but idk why?

What is the value of 4^2 -2 (3 x 5 + 1)

The answer is -16 but idk why?

What is the value of 7(10 - 2^3) + 8 % 2

The answer is 18 and idk y.

The empire state building in NY is 1,250 feet tall. It has 103 floors. Round to the nearest whole, What is the height of each floor?

1. 👍 0
2. 👎 0
3. 👁 292
asked by Megan
1. Don't wanna be impatient but its been over an hour and no one has helped me. :/

1. 👍 0
2. 👎 0
2. Homework Posting Tips

Please be patient. All tutors are volunteers, and sometimes a tutor may not be immediately available. Please be patient while waiting for a response to your question.

1. 👍 0
2. 👎 0
3. well what is 15 more than r?
it is 15 + r
and it says 15 + r is 61

4^2 = 4*4 = 16

3 * 5 + 1 = 15 + 1 = 16
2*16 = 32
then
16 - 32 = -16

7(10 - 2^3) + 8 / 2
2^3 = 2*2*2 = 8
10 - 8 = 2
7*2 = 14
8/2 = 4
14+4 = 18

1. 👍 0
2. 👎 0
posted by Damon
4. Thank you so so so much @Damon, ur a lifesaver. :D

1. 👍 0
2. 👎 0
posted by Megan
5. You are welcome.

1. 👍 0
2. 👎 0
posted by Damon

## Similar Questions

1. ### math

Deposits of \$1,000, \$1,100 and \$680 were made into a savings account, the first two years ago, the second 18 months ago, the third 6 months ago. How much is in the account now if the interest on all deposits is 12% compounded

asked by Anonymous* on July 18, 2011
2. ### value of money

Deposits of \$1,000, \$1,100 and \$680 were made into a savings account, the first two years ago, the second 18 months ago, the third 6 months ago. How much is in the account now if the interest on all deposits is 12% compounded

asked by nmh on July 8, 2011
3. ### math

On the last math quiz, there were four A's, two B's, five C's, and one D's. If the math quizzes were returned to the students in random order, what is the probability that the first quiz returned to a student was an A or a B?

asked by Anonymous on April 24, 2012
4. ### math

John's account of 98.50 has been delinquent for 3 months. After 90 days office charges a 2% service charge, compounded monthly that is added to future bills. What would be the amount owed after 9 months? My math is 98.50 x 0.02 =

asked by JOHNSON on May 9, 2010
5. ### Math

On a quiz a student answered 16 questions correctly. This was 80% of the questions on the quiz. How many questions were on the quiz? 6th grade math.

asked by Tasleem on March 27, 2017
1. ### Math

If Ms. Herbert gives her class a English quiz every 6 days any math quiz every 10 days when is the first day there will be a math and English quiz on the same day

asked by Alex on September 1, 2015
2. ### Math

John has scores of 88,73,90,85,93 on five math quizzes. What scores must john earn on the next math quiz to have a mean quiz score of exactly 88?

asked by Math(: on March 30, 2011
3. ### math

Mrs. Cason gives her class a spelling quiz every Monday, a math quiz every other Monday and a history quiz every third Monday . Sally smarty is in Mrs. Carson's class. She received a grade of 100% on all three quizzes today. How

asked by kelvin on December 7, 2009
4. ### Business math

Debts of \$500 due two months ago and \$900 due in nine months are to be settled by two equal payments, one at the end of three months and another at the end of six months. Find the size of the payment using a) the present as the

asked by melon on May 4, 2018
5. ### math

James needs to bring his grade up to a B (80) in reading. What does he need to get on his next quiz? Quiz 1:77 Quiz 2:81 Quiz 3:74 Quiz 4:?

asked by Sabrina on January 19, 2015

More Similar Questions