Need help with Geometry problems

Mathematics
Tutor: None Selected Time limit: 1 Day

Oct 28th, 2015

Thank you for the opportunity to help you with your question!

Similar triangles have the same ratio of sides. The base of each triangle are 20 and 8 respectively.

The ratio is 20/8 which is 5/2. Set this ratio equal to the ratio of the other sides to solve.

5/2=(x+10)/x Now cross multiply. Multiply the numerator from one side with the denominator from the other side of the equation.

5(x)=(x+10)2 Distribute the 2.

5x=2x+20 Subtract 2x from each side.

3x=20 Divide both sides by 3.

x=20/3=6.67

The answer is D.



Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 28th, 2015

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