Jsteward874 Jsteward874

09-01-2022
Mathematics

contestada

Alan has scored 99, 85, and 74 on his previous three tests. What score does he need on his next test so that his average (mean) is 83?

Respuesta :

kensley1489 kensley1489

09-01-2022

(99+85+74+x)/4=83
multiply both by 4
99+85+74+x= 332
258+x=332
subtract 258 both sides
x= 74

He must get a 74.

To check answer:
99+85+74+74= 332
332/4 = 83

It’s right!

Hope it helps

Answer Link

Otras preguntas

Each girl had 1/5 pound of cherries. There were 15 girls and 10 boys. How many pounds of cherries did the girls have altogether

cost of a sled;$99.50 markup95%

Match the term in column 1 to the definition in column 2.

How many copies of a gene are in a zygote?

Where could an identity theft access your personal information?

HELP ASAP!! DUE TOMORROW!! WILL MARK AS BRAINLIEST IF ANSWERED NOW!! What does this quote show or mean? "I didn't have a date or anything, so I and this

If a Is close enough to a ,then it will form a nova?

The term executive privilege originated with _____.

Which of the following is a biotic factor of an ecosystem? * a. grass b. a rock c. air

You are reading a lengthy description of a desert scene. This is called the

good job