Question 1: (0,2) because b value in mx+b is y-intercept
Question 2: plug in 4 for x you will get 1 so max is (4, 1)
Question 3: plug in -4 for x you will get -5 so min is (-4, -5)
Hope it helps :D
Answer: 27 ft
Step-by-step explanation:
Given
the angle of elevation is 
Length of track is 
Vertical rise is given by
Answer:
2.24 s
Step-by-step explanation:
Given:
Δy = 80 ft
v₀ = 0 ft/s
a = 32 ft/s²
Find: t
Δy = v₀ t + ½ at²
80 ft = (0 ft/s) t + ½ (32 ft/s²) t²
t = 2.24 s
Answer:
I believe it's A
Step-by-step explanation:
I'm not sure sorry if its wrong
Answer:
Please use " ^ " for exponentiation: x^2 + 2x + 8 ≤ 0.
Let's solve this by completing the square:
x^2 + 2x + 8 ≤ 0 => x^2 + 2x + 1^2 - 1^2 + 8 ≤ 0. Continuing this rewrite:
(x + 1)^2 + 7 ≤ 0
Taking the sqrt of both sides: (x + 1)^2 = i*sqrt(7)
Then the solutions are x = -1 + i√7 and x = -1 - i√7
There's something really wrong here. I've graphed your function, x^2 + 2x + 8, and can see from the graph that there are no real roots, but only complex roots. Please double-check to ensure that you've copied down this problem correctly.
