4.5^4 times 4.5^2 I am so confused
2 answers:
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Step-by-step explanation:
We know that area of Trapezium =
1/2 * (16+48) * 20
= 640 m²
Now, for semicircle,
1/2 * pi * r²
= 1/2 * 3.14 * 18.86 * 18.86
= 558.44 m²
Adding both,
1198.44 m² ~ 2000 m²
Hope it helps :)
First we write the kinematics equations:
a
v = a * t + vo
r = a * (t ^ 2/2) + vo * t + ro
For Wanda we have:
a = 0
v = 5
r = 5 * t
For Dave we have:
v = 10
r = 10 * (t-120)
To solve the system of equations, we graph both functions and see where
they intersect.
We have to intersect in the ordered pair:
(t, r) = (240, 1200)
answer
If they continue walking at these rates, Dave catch up to Wanda in 240s (1200 ft)
a
v = a * t + vo
r = a * (t ^ 2/2) + vo * t + ro
For Wanda we have:
a = 0
v = 5
r = 5 * t
For Dave we have:
v = 10
r = 10 * (t-120)
To solve the system of equations, we graph both functions and see where
they intersect.
We have to intersect in the ordered pair:
(t, r) = (240, 1200)
answer
If they continue walking at these rates, Dave catch up to Wanda in 240s (1200 ft)