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

Plz I need help on this Science question I don’t understand

7. The length of a rectangular swimming pool is 28 feet and the perimete is 84 feet. What is the area of the swimming pool? *

solve this parallelogram angle

Help me pleaseeee with this question

I’ll Mark you Brainiest only if your answer is correct & accurate I’m not sure what the answer is ‍♀️ ‍♀️‍♀️

(marking brainliest) please help asap! the question is in the pdf.

Ginny is cutting construction paper into rectangles. She needs to cut one rectangle that is 16 inches × 13 1/4 inches. She needs to cut another rectangle that i

Please can somebody grade this (I did the story)How bad could it be? It was just wind and water, right.March 12th, 10 pm. No more than a few hours ago, the sky

expanding triple brackets i will give brainliest

A person is wearing a bracelet with 11 settings around the bracelet. How many different ways can 12 birthstones be arranged around the bracelet? O 10! 11! O 12!