An employee at a pet shop randomly selects a fish from a tank where there are 5 guppies, 4 platyfishes, and 3 rasboras. What is the probability that the selected fish is a platyfish? Enter your answer as a fraction, in simplified form, in the box.

An employee at a pet shop randomly selects a fish from a tank where there are 5 guppies, 4 platyfishes, and 3 rasboras. What is the probability that the selected fish is a platyfish? Enter your answer as a fraction, in simplified form, in the box.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

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