(4x - 2) x (12x +42) (I distributed the 6 over the 2x and the 7)
Using the FOIL method
First terms (in each parenthesis) 4x times 12 x = 48x²
Outer terms 4x times 42 = 168x
Inner terms -2 times 12 x = -24x
Last terms -2 times 42 = -84
So we have 48x² + 168x + 168x - 24x -84
Finally combine like terms:
48x² + 144x - 84 There's your quadratic expression
Answer:
Step-by-step explanation:
[1] x = 10
[2] 3x + 5y = 20
0? + x = 10 5? + 3x = 20
27/60 = 0.45/1%
0.45 x 100 = 45
Samuel has a total of 45 cars, 60% of the total cars are red. Which is 27 red, and 45 total cars.
Answer:
55,000
Step-by-step explanation:
I already explained it on another problem but I'll show the equation again.
0.74x = 40,700
x = 55,000
