I assume you meant -5x+20? If so,
-5(x-4) = 0 This is the answer
x = 4
The function would be f(x) = 40x + 4.
It's plus 4 because it starts counting after the 4 kilometers already happened.
It's 40x because that's the rate of change (km/h) and the x represents the hours.
f(x) basically means y, but in functions you use f(x).
Hope this helps :)
Answer:
4i
Step-by-step explanation:
Distribute the 2, you get 4i.
It's imaginary because it has an i with it
Answer:
105, C
Step-by-step explanation:
16x + 1 + 40 = 27x - 3
This is because 180 - (27x - 3) = the missing angle in the triangle shown
16x + 1 + 40 = 27x - 3
1+ 40 = 41
16x + 41 = 27x - 3
+3 +3
16x + 44 = 27x
-16x -16x
44 = 11x
44/11 = x
x = 4
27x - 3 is equal to 27(4) - 3 = 108 - 3 = 105
Ans = 105
