Seudónimo Seudónimo
  • 07-02-2017
  • Mathematics
contestada

What will Sally's score need to be to give her an average of 91?

What will Sallys score need to be to give her an average of 91 class=

Respuesta :

christinann062
christinann062 christinann062
  • 07-02-2017
she would need a score of 89 to give her an average of 91.

108 + 72 + 95 + x / 4 = 91
add
275 + x / 4 = 91
multiply each side by 4
275 + x = 364
subtract 275 from each side 
x = 89
Answer Link
BlackBird2098
BlackBird2098 BlackBird2098
  • 07-02-2017
I was just guessing numbers but I got 89 and add 89, 72, 95, and 108 and then divide the total by 4 and you'll get 91
Answer Link

Otras preguntas

What is the minimum resistance which can be made using five resistors each of 1/5
Concentration of Ca(OH)2 is 10^-2 ..find its pH value.Explain too.
(1 pt) Which of the following represents a function?    A.      X = 1 1 1 1 1
What is the minimum resistance which can be made using five resistors each of 1/5
“Robin Hood and the Scotchman” Now bold Robin Hood to the north would go, With valour and mickle might; With sword by his side, which oft had been try’d, To fig
What is the factoring quadratic expression for 27x^2-12=0
why is silicon used to make PV cells
Work out the value of y^3+5y when y=2
__________ are the political leaders of the United States who helped in creating its system of government.A.The followers of Shays’ Rebellion B.Congress C.The S
What type of reaction is FeSO4 + Al = Al2(SO4)3 + Fe and Why ???