The total cost of the nicest trip to the dentist was $628.35. She paid a flat fee of $89.95 which included the check up and clea
ning and then had four cavities filled, each of which cost the same amount. Which shows the correct equation in value of X, the cost of each cavity filling?
1 answer:
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Answer:
4.4 ft/s
Step-by-step explanation:
Height = 15ft
Rate= 5 ft/s
Distance from the man to the kite= 32ft
dh/dt = 5 ft/s
h = √32^2 - 15^2
h = √ 1025 - 225
h = √800
h = 28.28ft
D = √15^2 + h^2
dD/dt = 1/2(15^2 + h^2)^-1/2 (2h) dh/dt
= h(225 + h^2)^-1/2 dh/dt
= (h / √225 + h^2)5
= (28.28 / √225 + 28.28^2)5
= (28.28 / √1024.7584)5
= (28.28/32)5
= 0.88*5
= 4.4 ft/s
You answer would be 16.2.
Hope this helps,
♥Nikki♥
Hope this helps,
♥Nikki♥