Answer:
B
Step-by-step explanation:
given the trinomial
15x² + 11x - 12
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 = 15 × - 12 = - 180 and sum = + 11
the factors are + 20 and - 9 , since
+ 20 × - 9 = - 180 and + 20 - 9 = + 11
use these factors to split the x- term
15x² + 20x - 9x - 12 ( factor the first/second and third/fourth terms )
= 5x(3x + 4) - 3(3x + 4) ← factor out (3x + 4) from each term
= (3x + 4)(5x - 3)
Answer: Choice F. Hyperbola opening up and down.
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Explanation:
The subtraction symbol between the two fractions indicates right off the bat that we're dealing with a hyperbola. The question now is "How does it open? Does it open up/down? Or does it open left/right?"
To answer this new question, we just need to look at which fraction is negative. The fraction with x in it is negative, so that means the y fraction is positive. The y fraction being positive is the indication of the hyperbola opening up/down.
A. (4a – 7) (4a – 7)
B. (4a + 7) (4a – 7)
C. (7 – 4a) (7 – 4a)
D. (7 + 4a) (7 – 4a)
Answer:
(0,-1)
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
find Jeremy’s age, j, if he is the younger man?
(1) j^2 + 2 = 783 (3) j^2 + 2j = 783
(2) j^2 - 2 = 783 (4) j^2 - 2j = 783