Answer:
at + vi = vf
Step-by-step explanation:
In order to solve for vf, we need to isolate said variable.
a = vf - vi/t (Given)
at = vf - vi (Multiply t on both sides)
at + vi = vf (Add vi on both sides)
Answer:
1. 
2. 
3. Proper Fraction
4. Mixed Fraction
6. 
7. 
8. 11 
9. 50 
10. 
Sorry, didn't see the last question
Hope this helped!
- 3/8 + 4/9
= LCM = 72
= - 3 * 9/ 8 * 9 = -27/ 72
= 4 * 8 / 9 * 8 = 32 / 72
= (-27 + 32)/ 72
= 5/72
When you factor this quadratic (or any polynomial, for that matter), what you get are the zeros of the function. When the object is on the ground, its height is 0. The zeros of a function are where the graph goes through the x-axis. Where the graph goes through the x-axis, the y value is 0. Using the quadratic formula to factor this gives you zeros of t = -1 and t = 7. The two things in math that will never EVER be negative are time and distance/length, so we know that object will hit the ground 7 seconds after it is thrown.
