Answer:
I think it is 381.7
Step-by-step explanation:
A= πr(+√h^2+r^2)
Subtract 30, then factor the equation.
... x² = 30
... x² - 30 = 0
... (x -√30)(x +√30) = 0
By the zero product rule, the solutions are values of x that make a factor be zero.
... x - √30 = 0 . . . . the first factor is zero
... x = √30
... x + √30 = 0 . . . . the second factor is zero
... x = -√30
The solutions are . . .
... x = ±√30 . . . . . matches your 3rd choice
Answer: the total is 62.55 so you would be paying $2.55 in tax
Step-by-step explanation:
Answer:
The height of the surface increases, then decreases, from the center out to the sides of the road.
Step-by-step explanation:
Let
y------> the height of the surface
x------> the road
we know that
The quadratic regression graphed represent a vertical parabola open downward
The function increase in the interval -------->
The function decrease in the interval --------> ![(0,5]](https://tex.z-dn.net/?f=%280%2C5%5D)
therefore
The height of the surface increases, then decreases, from the center out to the sides of the road.
0.6x + 1.5 = 3.9
0.6x = 3.9 - 1.5
0.6x = 2.4
x = 2.4 ÷ 0.6
x = 4