Answer:
Step-by-step explanation:
we are given volume and redious
but r is in inches and V is in gallons
so we have to convert V into inches unit
first convert gallon to cubic foot
now convert cubic feet to cubic inches:
now we need a little algebra to figure out h
substitute the value of V and r:
simplify square:
divide both sides by 81:
divide both sides by π:
12 inches = 1 foot
15.3 " =15.3/12
≈1.3 foot
Answer:
Peter should join <u>Lab thinkers</u> to receive a better deal.
Science buddies costs <u>190$</u> for six months.
Lab thinkers costs <u>170$</u> for six months.
Step-by-step explanation:
The equations are...
Science buddies: 10+30x -> 10+30(6)=190
Lab thinkers: 45+25x -> 45+25(6)=170
Peter saves 20$ if he chooses lab thinkers.
Sorry for my mistake, this is my new edit.
I do not understand why you or your teacher have written down a certain number of minutes by each equation, but I will do my best to answer your question. I hope that I’m able to help.
1,2) 20 + 3.5x = 30 + 2.75x
-20 -20
3.5x = 30 + 2.75x - 20
-2.75x -2.75x
0.75x = 10
/0.75 /0.75
x = 13.333...
3,4) 3.5x + 2.75x = 20 + 30
6.25x = 50
/6.25. /6.25
x = 8
The answer is 140, you just add them up and it goes by 2.
Answer:
It's 155
Step-by-step explanation:
Since the whole angle is 180
And u got 25
So 180-25=155
