Answer:
4 -9/20
Step-by-step explanation:
separate whole numbers and fractions: 9-5, 3/10 - 3/4
then you subtract the whole numbers: 4
after that (what i mostly use that is easy for me is cross multiplication/ Butterfly method)
12 - 30
<u>3</u> - <u>3</u> = <u>-18</u> = <u>-9</u>
10 4 40 20
Answer:
A=3797 dollars
Step-by-step explanation:
A=P(1+r)^t t=time period, r is the rate, P is the principal
A=2000(1+0.06)^11
A=3797 dollars
1) Determine the horizontal force, Fx, exerted by the block on Usain
cos(20°) = Fx / F => Fx = F*cos(20) = 1700N*cos(20) = 1597.48 N
2) Determine the Impulse of that force on Usain.
I = F*t = 1597.48N * 0.32s = 511.19 N*s
3) Determine change in momentum of Usain, Δp
Δp = I = 511.19 N*s
4) Find change if velocity
Δp = Δ(mV) = mΔV => ΔV = Δp / m = 511.19 N*s / 86 kg = 5.94 m/s
Given the Usain started from rest, the velocity is ΔV - 0 = 5.94 m/s
Answer: 5.94 m/s
Sa = 2pi r h + 2pi r²
= 1327.32 units squared
