198 feet in 5 seconds. You have to multiply the feet per second by how many seconds he is going to travel
Part A:The original brand was 12$ each and the new one is 8$ each.
12-8=4
<span>Part B:she will save 16$ each month because y=12*4 and y=8*4 is 16$</span>
Answer:
Step-by-step explanation:
This is our quadratic:
![s(t)=-4.9t^2+15t+h_{i}](https://tex.z-dn.net/?f=s%28t%29%3D-4.9t%5E2%2B15t%2Bh_%7Bi%7D)
where s(t) is the position of the object after all the stuff on the right side happens to it. If the object lands on the ground after all that stuff happens to it, its height is 0. Subbing in a 0 for s(t) gives us:
![0=-4.9t^2+15t+h_{i}](https://tex.z-dn.net/?f=0%3D-4.9t%5E2%2B15t%2Bh_%7Bi%7D)
and if the object hits the ground at 21 seconds, we can sub in a 21 for each t to get this:
and do the math.
and solving for the height:
h = 1845.9 meters
Answer:
Britney is correct
Step-by-step explanation:
Gabrielle is wrong because when mutiply -6 and -4, the negatives cancel out to give +24.
<span>7 – 9y = -6y – 7 – y
Add 9y to both sides
7 = 3y - 7 - y
Subtract y from 3y
7 = 2y - 7
Add 7 to both sides
14 = 2y
Divide 2 on both sides
Final Answer: 7 = y</span>