Answer:
It will take Naomi 22 hours
Step-by-step explanation:
If they work together Mark, Naomi, and Yvonne take 11 hours, which means
three people represent 3* 11 = 33 man* hours
If they work alone Yvonne will take 5 man hours, and Mark will take 6* man hours.
Now we know that together they take 33 man hours therefore we have
5+ 6+ N = 33
Where N is Naomi's man* hours. We solve for N and get:
N = 33 - 11 = 22
N = 22
Naomi will take 22 hours to finish the job if she worked alone.
Answer:
id say 4 google's calculator is a good math helper as well
Step-by-step explanation:
Answer: Perpendicular.
Step-by-step explanation:
If you multiply the slopes together you will get -1:
<em>Parallel means they have the same slope, so that is easily ruled out here.</em>
The answer is C
the mean is the average which is solved by adding up all of the numbers and then dividing that by how many numbers there are, 45/5 = 9
The answer is 4
So the ratio would be 12/4
Then u simplify into 4/1 ( I divided each number by 4)
