Answer:
x = we can’t find the value of x because -5x has a variable and 9 doesn’t, so we can’t do anything.
Answer:
sorry but i need the points
Step-by-step explanation:
Answer:
72
Step-by-step explanation:
If you wouldn't mind giving me brainliest, i'm just trying to rank up.
Here is another one of those " quadratic word problems " at hand, which is great!
By the function that is given to us ( which I believe is meant to be 
) the airplane is launched at a height of 251 metres, with no velocity. Anyhow, we need to determine the duration with which the airplane will strike the ground, and to do so we can set up the following equation, 
- solving for t, otherwise known to be the time!
See the procedure below -
- Subtract 251 from either side,
- Divide either side by - 5,
- And, now isolate t, receiving two solutions,
However, time can't be a negative value. Thus our solution is 
, which is ( about ) 7.085 seconds!
