x²+3x = 9x - 8
Subtract 9x on both sides
x² - 6x = -8
Add 8 on both sides
x² - 6x + 8 = 0
Now you need to find the factors of 8(numbers that multiply to equal 8) that add or subtract to -6.
Factors of 8: 1, 2, 4, 8
2 and 4 add up to 6, if they are both negative they equal -6.
(x - 2)(x - 4) = 0
x - 2 = 0
x = 2
x - 4 = 0
x = 4
x = 2, x = 4
Answer:
The 3rd answer, when m is next to a number it means “per” for something like per second or (in this case) per minute, etc...
Step-by-step explanation:
Answer:
x = 18°, ∠A = 110°
Explanation:
As the lines are parallel, their sums of total interior angle is 180°
∠A + ∠B = 180°
5x +20° +9x-92° = 180°
14x -72° = 180°
14x = 180° + 72°
14x = 252°
x = 18°
Solve for angle A:
∠A = 5x +20°
∠A = 5(18) +20
∠A = 110°
The answer would be about 86.27 m² - Hope this helps!
D
There are infinite amounts of solution
I learned this way back in 8th grade