Answer:
First, add the two mixed numbers together.


Combine the equation and number.

4 2/7
Therefore, the answer is 1/2
Answer:
x² +18x +81
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(x+9)² = x²+9²+2*x*9= x² +18x +81
We can solve using proportions

or 4 works is to 10 hours as 5 workers is to x hours.
to solve we cross multiply to get

so it will take 5 men 12.5 hours!
First plug in the numbers for x and y
-2.31-(-5.9)
When a negative is being subtracted you replace it with an addition symbol. So, now the equation is -2.31+5.9
Answer: 3.59