Answer:
-5.457875
Step-by-step explanation:
0=40-10t-5t^2
t^2+2t-8=0
(t+4)(t-2)=0
t=-4 (not a solution) or t=2
Answer: after 2 seconds
Answer:
j-4 is how you show 4 less than a number j
Answer:
25
Step-by-step explanation:
You add 2+3 and get 5. Then you square it to get 25.
