Answer: 2.66 hours
Step-by-step explanation:
Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.
Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.
Together in 1 hour they can paint 1/8 + 1/4 = 3/8
Total hours for painting is 3/8 or 2.66 hours
Answer:
35
Step-by-step explanation:
For this question do 27 squared which is 729 + 22 squared which is 484 then add them to get 1213 then square root 1213 to get 34.8281495345 which rounded to the nearest inch would be 35
The mass of the first shipment at time t is

The mass of the second shipment at time t is

At time t, the ratio of m₁ to m₂ is

Therefore as a percentage,

Answer: B. 81.2%
For x you insert zero, and
0 = 2 - 8 * 0
0 = 2