12 pack for 8.5
6 for 5.75
5.75x2=11.5
12 pack is a better buy
Answer:
12.5 ft/s
Explanation:
Height of person = 6 ft
height of lamp post = 10 ft
According to the question,
dx / dt = 5 ft/s
Let the rate of tip of the shadow moves away is dy/dt.
According to the diagram
10 / y = 6 / (y - x)
10 y - 10 x = 6 y
y = 2.5 x
Differentiate both sides with respect to t.
dy / dt = 2.5 dx / dt
dy / dt = 2.5 (5) = 12.5 ft /s
You use Sin-Cos-Tan. Since Tan is opposite and adjacent (SOH-CAH-TOA) we use that equations which is listed below. We rearranged the equation to get O alone and then plug everything in.
Answer:
25+3x simplified
Step-by-step explanation:
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