trevensirboz123 trevensirboz123

01-11-2014
Mathematics

contestada

Cory's average score after 8 tests is 91%. If he gets a 78% on his 9th test what will his new average be?
How do i figure out this problem?

Respuesta :

187Blank 187Blank

01-11-2014

You should be able to multiply 91 by 8 to get the sum of the first 8 tests, then add the score on the 9th test. Then to get the average of the sum of the 9 tests you need to divide it by 9.
((91*8)+78)/9=89.555555555555.... So, 90%

Answer Link

Otras preguntas

I need to write an essay about Harriet Tubman

Which leader was the first African American president at two different institutions for higher learning

What is the purpose of the outer ear? A. To convert mechanical waves into electrical waves B. To evaluate the quality of sound C. To convert sound waves into me

Events and conditions that happen within an organization that are somewhat easier to deal with when responding to change are called a0 influences.

Help with Spanish hw

Write a description about a boy with blonde hair that falls perfectly without him even trying.

5, 6, 10 Question: A. Determine whether the side lengths form a triangle. (explain your reasoning) B. If it is a triangle, determine whether it is a right,

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Read the movie summary. Two rival magicians compete for fame and success in Edwardian London. When their bitter feud begins to escalate, they each resort to m

Which statement is true about common childhood infectious disease? A. Children should always be given antibiotics to treat an infectious illness. B. Freq