Answer:
Complementary, x=78
Step-by-step explanation:
90= (x-8)+20
complementary angles add up to 90 degrees.
Answer:

Step-by-step explanation:

This equation shows the income obtained based on the number of boats sold. We want to know the minimum number of boats that must be sold to obtain $ 75 000.
Then we must equalize the equation to 75 000 and clear b.
3 solutions will be obtained (because it is a polynomial of degree 3), and the lowest value will be taken.


Now we need to solve the equation, for that we seek to factor the polynomial

we divide the equation by -25
We take common factor b
We take out common factor (b-30)
Finally the solutions are:

b = 10 and b = -10
We take the least positive solution (because you can not produce -10 boats)
Finally b = 10
The smallest number of boats that must be produced to make a profit of $ 75,000 is 10 boats.
X^2 + 4x + 4
(x + 2)(x + 2) or (x + 2)^2
Answer:
207/2 or 103 and 1/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given equation:

Solving for 
Combining like terms on both sides.


Adding
both sides to get
terms on one side.


Adding 12 both sides to isolate
on one side.


Dividing both sides by 8.

∴
(Answer)