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:
<h2><u>[A] 0</u></h2>
Explanation:
- <u>Lines of symmetry; A line that cuts a shape exactly in half</u>
If you were to put a line of symmetry down and fold the shape in half on that line, both halves would match exactly.
- If you were to put a line of symmetry down on <u>this triangle</u> both sides <u>would not match</u>, therefore there are no lines of symmetry.
<h3><u>There are zero lines of symmetry, therefore your answer is [A] 0</u></h3>
