Slope= -1/3
14-9/-7-8
5/-15
1/-3
6x^2 - 8 = 4x^2 + 7x
6x^2 - 4x^2 - 7x - 8 = 0
2x^2 - 7x - 8 = 0
discriminant = b^2 - 4ac; where a = 2, b = -7 and c = -8
d = (-7)^2 - 4(2)(-8)
d = 49 + 64
d = 113
the discriminant is greater than zero, so there are two real roots
54 miles
using the formula
speed =
=
= 12 mph
continuing at 12 mph then
distance = speed × time = 12 × 4.5 = 54 miles
Answer: A module learning
Step-by-step explanation: