Answer: 55%
Step-by-step explanation: 100%-45%=55%
Answer:
4.5
Step-by-step explanation:
Answer:
13 seconds.
Step-by-step explanation:
Given

Required
Determine a reasonable solution for t
To do this, we equate h to 0.
becomes

Divide through by -4.9

Reorder the expression

Split
or 
This gives:
or 
But time can't be negative, So:

300/15 = d
I hope this helps!
2n-4= n-10
-n. -n
n-4=-10
+4. +4
n=-6
Final answer: -6