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from the top of a vertical cliff 50 m high, the angle of depression of an object that is level with the base of the cliff is 70°. how far is the object from the base of the cliff?

18.2

Step-by-step explanation:

tan 70 = 50/x

x = 50/ tan 70

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

answer: 1, 3 and 5 are correct

step-by-step explanation: