248/4=62
62•7 1/2=465 miles
He will go 465 miles in 7 hours and 30 minutes
Hmm,
ok,
complete square ok
wait wat
he went from
(x-3)²=16 to
x-3=16
?????
he square rooted the left side only
he has to do it to both sides
he should have done
(x-3)²=16
x-3=+/-4
x=3+/-4
x=7 or -1
To Find :
How many gallons of a 80% antifreeze solution must be mixed with 100 gallons of 20% antifreeze to get a mixture that is 70% antifreeze.
Solution :
Let, x gallons of 80% antifreeze solution is required :
So,

Therefore, 500 gallons of 80% antifreeze solution is required.
12x^2y^2+2xy-2 with problems like these use the app “Photomath” it will help you a lot.
Answer:
I beliEve it is D
Step-by-step explanation: