17. The height of an object dropped from a hot-air balloon can be determined by the formula
h = -16r2 + s, where h is the height of the object
in feet, 1 is the elapsed time in seconds, and s is
the height of the balloon.
If the balloon is 400 feet from the ground, how
long will it take for an object dropped from the
balloon to hit the ground?
ximum
e used
garoo's
A
2.5 seconds
B.
5 seconds
C.
7.5 seconds
D.
10 seconds

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0