PLS HURRY ASAP WILL MARK THE BRAINILEST The mean (average) of 4 numbers is 88.
What is the fourth number if three of the numbers are 80, 95, and 85?

A. 92
B. 54
C. 75
D. 99
E. None of these

Step-by-step explanation:

Add up the four test scores (80, 95, 85, x) then divide by 4 and set that result equal to 88. The equation you get is (80+95+85+x)/4 = 88. Now solve for x.

(80+95+85+x)/4 = 88

(260+x)/4 = 88

4*(260+x)/4 = 4*88

260+x = 352

x+260 = 352

x+260-260 = 352-260

x = 92

The fourth missing number is 92

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!