Answer:
80
Step-by-step explanation:
78 is only 2 from 80 while it is 8 from 70
First divide by 4 to get x^2=9. Then take the square root of both sides. x=3 and x = -3.
Answer:
y = 5
Step-by-step explanation:
That "+5" elevates the graph of this cosine function 5 units above the x axis, and thus the "midline" you wanted is y = 5.
Your answer in cm would be 5,200,000.
As 1km=100,000 cm
