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17.07.2021 •
Mathematics
I’ve been working on this all day please help me solve it
Solved
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Ответ:
a and b) 256
c) 5
d) 400
e) 10
Step-by-step explanation:
160(2) - 16(2)² = 320 - 64 = 256
h(2) = 256
find zeros
0 = -16x²-160x
0 = -16x(x-10)
-16x=0 x = 0
0 = x-10 x = 10
Δx₁,x₂ = 10/2 = 5 max height is at x = 5
find max height using x-value:
-16(5)²+160(5) = -80 + 480 = 400
for e) use second root (x = 10)
Ответ:
A≈153.94cm²
Step-by-step explanation:
A=πr2
d=2r
Solving forA
A=1
4πd2=1
4·π·142≈153.93804cm²