C
6x^2-13X-5=0
(3X+1)(2X-5)
3x-1=0
X=1/3. 2x-5=0. X= 5/2
The toy rocket hits the ground when h(t) = 0.
So, h(t) = 0 = -9t^2 + 81.
Solving the equation,
-9t^2 = -81
Dividing by -9
t^2 = 9
Taking the square root.
t = 3
The answer is 3 seconds.
Answer:
- increase
- decrease
- increase
Step-by-step explanation:
- A sales tax is ALWAYS an increase. That's why governments use sales taxes.
- A discount is ALWAYS a decrease. That's it's definition. You are being given a break.
- A tip is meant to supplement the pay someone gets. It's an increase from your point of view.
Answer:
21/5
Step-by-step explanation:
cross multiply
21=5x
flip
5x= 21
divide both sides
Answer:
7.5
Step-by-step explanation:
Since we are given the price for 5 bags of dog food, we have to find the unit rate. Now to do that we divide the price by the amount.
12.50/5= 2.50
now since we have the unit rate, we take that and multiply the price of one by 3 to find the price of 3
2.50x3=7.50
Hope this helps!
