Answer:
x = - , x =
Step-by-step explanation:
to find the points of intersection equate the 2 equations , that is
7x - 15 = 10 + 12x - 6x² ( subtract 10 + 12x - 6x² from both sides )
6x² - 5x - 25 = 0 ← factor the quadratic on left side
consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 6 × - 25 = - 150 and sum = - 5
the factors are - 15 and + 10
use these factors to split the x- term
6x² - 15x + 10x - 25 = 0 ( factor the first/second and third/fourth terms )
3x(2x - 5) + 5(2x - 5) = 0 ← factor out (2x - 5) from each term
(2x - 5)(3x + 5) = 0
equate each factor to zero and solve for x
3x + 5 = 0 ⇒ 3x = - 5 ⇒ x = -
2x - 5 = 0 ⇒ 2x = 5 ⇒ x =
l (length)=3x
P (perimeter)= 8x+6 = 2 x length + 2 x width
8x+6 = 2 (3x) + 2 x width
8x+6 = 6x + 2 x width
2 x width = 8x+6 - 6x
2 x width = 2x+6
width = 1/2(2x+6) = x + 3
Hope it helps
Answer: C. 0
Step-by-step explanation: 9+(-9) is the same thing as 9 - 9 which equals 0.
Answer:
a = 65p
Step-by-step explanation:
780/12 = 65
1,040/16 = 65
1,235/19 = 65
Answer:
c
Step-by-step explanation: