It's the absolute value which is 8
The answer should be 24 gallons and a half
Answer:
70x-100=850
Step-by-step explanation:
70x-100=850
We move all terms to the left:
70x-100-(850)=0
We add all the numbers together, and all the variables
70x-950=0
We move all terms containing x to the left, all other terms to the right
70x=950
x=950/70
x=13+4/7
<span>N + D = 55 coins (1) (N stands for nickels,
5N + 10D = 390 cents (2) D stands for dimes)
Simplify (2) by canceling the factor 5 in both sides:
N + 2D = 78 (3)
Subtract eq(1) from eq(3). You will get
D = 78 - 55 = 23.
Answer. 23 dimes and 55-23 = 32 nickels.
Check. 23*10 + 32*5 = 390 cents</span>