First we want to set the equation equal to zero by subtracting 36 from each side...
x^2 + 5x -36 = 0
Now we factor
(x + 9)(x - 4) = 0
Now set each expression equal to zero and solve...
x + 9 = 0 x - 4 = 0
x = -9 x = 4
Your solution set is
(-9, 4)
The solution to the set of equations is (0,2).
Reasoning:
m + 4n = 8 -> 0 + 4(2) = 8
m = n - 2 -> 0 = 2 - 2
Answer:
Advertising and promotion.
Borrowing costs.
Employee expenses.
Equipment and supplies.
Insurance, license, and permit fees.
Research expenses.
Technological expenses.
Step-by-step explanation:
2 hr 15 min = 2
hours = 2.25 hours
"how far" means distance ... so distance = rate x time
distance = 56 x 2.25 =
126 miles
"how long" means time ... so using the same formula
168 = 56 x time
divide both sides of the equation by 56 to solve
3 hours = time