4x+1 = 2x+7
4x-2x = 7-1
2x = 6
x= 6/2
x= 3
Answer:
9
Step-by-step explanation:
if the opposition of a number is equal to -9.
hence the expression above....
in 4 minutes it changed 8 feet
so 8/4 =2 feet per minute change
and since it dropped it would be a negative change so -2 feet per minute
Answer:
100
Step-by-step explanation:
I think the correct answer is C. Since a=πr², in order to get the area to become 1/4 of what it was previously, the radius needs to be cut in half to make the divide that side by 4. a=π(r/2)²=πr²/4 and will therefore multiply the area by 1/4.