huynhfamily2001 huynhfamily2001
  • 13-08-2020
  • Mathematics
contestada

lily scored her first Spanish test are 96, 85, 90, 92. What test score must lily earn on the 5th test so that her mean will be exactly 90.

Respuesta :

TigerLily06
TigerLily06 TigerLily06
  • 13-08-2020

Answer:

87

Step-by-step explanation:

[tex]\frac{96+85+90+92+x}{5} = 90\\[/tex]

[tex]\frac{353+x}{5} = 90[/tex]

[tex]353+x= 5(90)\\[/tex]

[tex]353+x=450[/tex]

[tex]x=87[/tex]

Answer Link

Otras preguntas

Find the surface area of the composite figure. 8 cm 6 cm 7 cm 8 cm SA = 6 cm [?] cm² 9 cm 6 cm
A metallurgist has one alloy containing 26% copper and another containing 69% copper. How many pounds of each alloy must he use to make 53 pounds of a third all
If f ( x ) = 3x 2 - 6x + 2 and g ( x ) = 2x 2 + 2x - 11, then find f ( x ) + g ( x ).
Do children have lower MHR than adults
A rental truck company charges a flat fee of $30 to rent a truck in addition to $0.25 per miles how much would it cost to rent a van for 80 miles
According to your reading, adults should participate in muscle-strengthening activities at least ________ day(s) per week, as part of their normal exercise plan
which of the following rational functions is graphed below?
Which is true of the first leader of the Federal Republic of Germany?
What are Bronchi? A. Tiny air sacs in the lungs. B. A phospholipid that coats the lungs. C. Branches of the trachea that connect to the lungs. D. The membrane i
ASAPP help me with this question