strawberryycow strawberryycow

22-03-2021
Mathematics

contestada

David has earned the following test
grades: 89, 96, 99, 85. What is the
grade David has to earn on his 5th test to maintain a test
average of 90?

Respuesta :

koloabbaabubakar koloabbaabubakar

22-03-2021

Answer:

81

Step-by-step explanation:

Required average= 90

let the required grade be x

Average= Sum of n numbers

90= 89+96+99+85+x divide by 5

450= 369+x

x = 450-369

x=81

Answer Link

Otras preguntas

What is the scientific name of 'touch me not' plant? can you give an explanation about its mechanism?

can you tell me what Is Pleonasm?

what event triggered world war i ?

Write the equation For a Line that intersects points(1,3) And (2,5) which one is a.y=x+2 B.y=2x+1. C.y=3x-3. D.Y=-x+3 For me is letter B.please help

Insert 2 irrational numbers between 2/5 and 3/4

What expression represents the number of squares in terms of the figure number?

How do I solve for x and state the restriction if (a-c)/(x-a)=m

what is the possessive case?

Write the equation For a Line that intersects points(1,3) And (2,5) which one is a.y=x+2 B.y=2x+1. C.y=3x-3. D.Y=-x+3 For me is letter B.please help

A second baseman tosses the ball to a first baseman, who catches it a the same level from which it was thrown. The throw is made with an initial speed o 19.0 m/