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Aleks04 [339]
2 years ago
11

Solve the equation: 12x+5=3x+35

Mathematics
2 answers:
Tresset [83]2 years ago
8 0

Answer:

x = 10/3

Step-by-step explanation:

12x+5=3x+35

Subtract 3x from each side

12x-3x+5=3x-3x+35

9x +5 = 35

Subtract 5 from each side

9x+5-5 = 35-5

9x = 30

Divide by 9

9x/9 = 30/9

x = 10/3

maksim [4K]2 years ago
4 0

Answer:

x= 3 1/3

Step-by-step explanation:

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Given the statement: An observer on top of a 50-foot tall lighthouse sees a boat at a 7° angle of depression.

Let x foot be the distance of the object(boat) from the base of the lighthouse

Angle of depression = 7^{\circ}

\angle CAB = \angle DCA = 7^{\circ}       [Alternate angle]

In triangle CAB:

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Using tangent ratio:

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