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

Over time, the power of the presidency has expanded because

Help me and I'll do the same

Help me plzz I'll do the same

All numbers divisible by both 24 and 14 are also divisible by which of the following?

places with mild climates typically have ______ summers and ________ winters. hot; cold hot; cool warm; cool warm; cold

Nouns, pronouns, or phrases that follow another noun or pronoun to rename it are called _____.

When you combine alcohol with some drugs, the results can be __________.?

What is the appropriate tone for a cover letter? a. friendly b. authoritative c. scholarly d. professional

Help me out plzz and I'll do the same

a gardener uses a tray of 6 conical pots to plant seeds. each conical pot has a radius of 3 centimeters and a depth of 8 centimeters. about how many cubic centi