Answer:
-14
Step-by-step explanation:
Okay first we must simplify the expression.
so this:(3x^2 + x-2)(x - 5)
becomes this:3x^3-14x^2-7x+10
then we look at the coefficient of x^2 and we see that it's -14
Michael could save about 95 minutes by taking the train.
Answer:
<h2>The area of the triangle ABC is 32 square inches.</h2>
Step-by-step explanation:
We know that the given triangle is a right-isosceles triangle, which means its leg are equal.
The area of a triangle is defined as
Where 
and 
. Replacing values, we have
Therefore, the area of the triangle ABC is 32 square inches.
Answer:
D
Step-by-step explanation:
Call the first person A who can do the job in 5 hours.
Call the second person B who can do the job in 7 hours.
The formula for this problem is
Time = A*B/(A + B)
Time = 5*7 / (5 + 7)
Time = 35 / 12
Time = 2 hours and 11/12 of an hour.
The answer is D.
Answer:
20.25
Step-by-step explanation:
Just multiply the base and height then divide the results in half.
Hope this helps!
