Answer:
9 minutes
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>The volume is the product of three dimensions, so the ratio of volumes is the cube of the scale factor:</u>
- k = 8/11
- k³ = (8/11)³ = 512 / 1331
Answer:
Step-by-step explanation:
Brittany paints the room in x hours, completing 1/x of the room per hour.
Ashley paints the room in x+2 hours, completing 1/(x+2) of the room per hour.
Working together, they complete 1/x + 1/(x+2) = ⅐ of the room per hour.
7(x+2) + 7x = x(x+2)
14x + 15 = x^2 + 2x
x^2 - 12x - 15 = 0
x = [12 ±√(12²+60)]/2= 6±√51
6-√51 is an extraneous solution.
x = 6+√51 ≈ 13.14
Brittany paints the room in 12.14 hours
Answer:
30
Step-by-step explanation:
If you start at -2F and count all the way to 28F you can mark down every count to get your answer. Or subtract 28F by -2F.
