Answer: I would choose option "c"
Step-by-step explanation:
F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)
f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4
Answer: C. x = -5 and x = 4.
B. is the answer because he can just refill the 1 gallon jug to eventually measure out 3 gallons!
Answer:
D
Step-by-step explanation:
every 2 sides of a triangle has to be bigger than the 3rd side
1/3
3/9
4/12
are equivalent to 2/6
