1. h₀ = 70
v₀ = 0 since the rock is dropped it has no initial velocity
when the rock hits the ground the height = 0
plug into the formula
0 = -4.9t² + 0(t) + 70
0 = -4.9t² + 70
Add 4.9t² to both sides
4.9t² = 70
Divide both sides by 4.9
t² = 14.2857142857
Take the square root of both sides
t = 3.7796447301
t ≈ 3.8 seconds
I am not doing the rest I only did one just to help you understand a bit more
Answer:
Angle A is 64 degrees
Step-by-step explanation:
See attachment
10/4
To get then watts per panel
550 / the Watts per panel to get the number of panels need
Always round this up if necessary
First, you need to add 4 to both sides so you’re left with 5/6x = 6
then, divide 6 by 5/6 to find x
for me personally, it help to write 6 as 6/1
cross multiply so both fractions have the same denominator
6 divided by 5/6 is 36/5 as a mixed number or 7 1/5
