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pickupchik [31]

3 years ago

12

Help me in this question

1 answer:

KATRIN_1 [288]3 years ago

5 0

H = -5t^2 +5t + 10

a) t = 0, h = 10 at time 0

b) h = (-5t + 10) ( t + 1)

c) put 0 in for the height and set each factor = to 0 and solve each
0 = (-5t + 10) and 0 = (t + 1)
solve each t = 2 and t = -1, so t = 2 sec is your solution

d) because a parabola is symmetric, the max will be half way between -1 and 2, at t = 1/2

h = -5(1/2)^2 +5(1/2) + 10
h = -5(1/4) + 5/2 +10
h = -5/4 + 5/2 + 10
h = -5/4 + 10/4 + 40/4
h = 45/4

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siniylev [52]

Answer:

Slant height (s)= 12.1 cm

Step-by-step explanation:

Given: Base= 4.5 cm.

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Surface area of square pyramid= $(a^{2} +2\times a\times s)$

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