Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number? a) 4 b) 6 c) 8 d) 10
1 answer:
Answer:
10
Step-by-step explanation:
First you do 8 × 4, this gives the total of the four numbers.
Then, subtract the total of 3 of the numbers from the total of 4 of the numbers.
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The answer is that (It’s 6.6)
I believe it’s b I might be wrong tho
Answer:
13.5
Step-by-step explanation:
X = dryer
(X+79) = washer
X + (X+79) = $1029
Therefore, x+x+79= 1029 or 2x+79=1029
Solve for x
2x = 1029-79
2x = 950
2x/2 = 950/2
X= $475 The price of the dryer is $475
3/2 - x = -12
(multiply everything by 2 to get rid of fraction)
3-2x= -24
3+24 = 2x
3/2 + 12 = x
