4. A theatre lighting technician adjusts the light to fall on the stage 3.5 m away from a point directly below the lighting fixture. The technician measures the angle of elevation from the
lighted point on the stage to the fixture to be 56°. What is the height of the lighting fixture?​

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the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be