Answer:
10
Step-by-step explanation:
Ground level is where h = 0, so solve the equation ...
h(x) = 0
-5(x -4)^2 +180 = 0 . . . . substitute for h(x)
(x -4)^2 = 36 . . . . . . . . . . divide by -5, add 36
x -4 = 6 . . . . . . . . . . . . . . positive square root*
x = 10 . . . . . . add 4
The object will hit the ground 10 seconds after launch.
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* The negative square root also gives an answer that satisfies the equation, but is not in the practical domain. That answer would be x = -2. The equation is only useful for time at and after the launch time: x ≥ 0.
Since the line is going from the top left to the bottom right, the slope is negative so A and B are possible answers.
the line crosses the y axis at -1
B is the option that ends with -1
therefore your answer is B. y = -2x - 1
I believe the answer is 40%
Not entirely sure, hope I helped though!
Answer:
5 x (2 - 4)
5x-8= -10x
15x=8
x=8/15
Hope this helps!
Add all the numbers together to find the total amount of college students surveyed.
355 + 292 + 280 + 191 + 198 + 136 + 66 + 24 = 1,542
The number is already simplified considering it's a whole number. The answer is either 1,542 or 1,500
<em>(I say either because when it says to simplify I'm not sure if they want it to be rounded.)</em>