lol22 lol22
  • 12-03-2015
  • Mathematics
Answered

define a variable, write an inequality, and solve ; Ray had scores of 75, 82, 94, and 77 on his first four science test. what must he score on the next test to have an average of at least 85?

Answer :

secret13 secret13
  • 12-03-2015
[tex] \frac{x+75+82+94+77}{5} = 85[/tex]

[tex] \frac{x+328}{5}=85 [/tex]

x + 328 = 5(85)

x + 328 = 425

x = 425 - 328

x = 97

He must score 97 on the next test to have an average of at least 85
Answer Link

Other Questions

What was the Underground Railroad Your response needs to include and explain the terms conductor lines station and freight
what is the factors of production
The study of oceans in world history A focuses on transAtlantic themes B focuses on the commercial activities of elite classes C has less impact on global histo
what was John Rolfes chief contribution to Virginias economy
Mr Wilk is a high school math teacher whose salaryis 33660 for this school year which has 180 daysIn Mr Wilks school district substitute teachers are paid 85 pe
Sam has traveled 33 miles and knows that 55 of his trip is completeHow many total miles is Sams trip
Which sentence best describes Paul Bunyan A He is bigger and stronger than anyone else B He is braver and wiser than anyone else C He is funnier and friendlier
help me with this french hw plzz
5 do anyone know the steps
Who did Ronald Reagan defeat in the 1984 presidential campaign