When I am 5% older than I am now, I will be 21 years old. How old am I now?
2 answers:
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Answer:
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Work Shown:
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Explanation:
The idea is to first get all the y terms to one side. I did this by subtracting 2y from both sides in the third step.
Then factor out y and divide both sides by (8x-2)
Afterward there's the optional steps of simplifying (as shown in the final two steps).
Answer:
b = 7
Step-by-step explanation:
Since the triangle is right use the tangent ratio to solve for b
and the exact value
tan30° = , thus
tan30° = =
and
=
( cross- multiply )
b = 7