Answer:
386m/s is the answer to your question
Answer: 54 degrees
explanation: i haven’t learned this yet but it looks like those two angles are complementary angles so the other one would have to 54 so it adds up to 90 degrees
So for this you need the two solutions to be x= -9 and x=3 then move over the numbers and put in brackets (x+9)(x-3) then multiply together x^2+9x-3x-27 then combine like terms to get x^2+6-27
I hope this helps you
Area=length.width
343=l.w
7.7.7=l.w
l=49
w=7
Perimeter=2 (49+7)
Perimeter=2.56
Perimeter=112
