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# Tutor profile: Sarah E.

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Sarah E.
Math Tutor
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## Questions

### Subject:Geometry

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Question:

What is a regular polygon and how do you find the angles and perimeter.

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Sarah E.

A regular polygon is a polygon where all the sides are equal length and all the angles are equal as well. You can find the angles of any given regular polygon using this formula, \$\$180/n\$\$ where \$\$n\$\$ is the number of angles in the polygon. To find the perimeter you multiply the single given length by the number of sides.

### Subject:Pre-Algebra

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Question:

How do you find an equivalent ratio? For example, find the number that makes the ratio equivalent to \$\$3:5\$\$

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Sarah E.

A ratio is a comparison of two numbers; for example, a ratio of \$\$1:3\$\$ means that for every one object, there are three of a corresponding object. An equivalent ratio is just a multiple of the original ratio; meaning, a ratio of \$\$1:3\$\$ is equivalent to \$\$2:9\$\$ and \$\$3:9\$\$. To find a ratio that is equivalent to a given ratio, you just have to multiply the given ratio by any number. So, an equivalent ratio to \$\$3:5\$\$ can be \$\$6:10\$\$ or \$\$9:15\$\$ etc.

### Subject:Algebra

TutorMe
Question:

How do you set up a system of equations and solve for x and y? For example, the admission fee at a small fair is \$1.50 for children and \$4.00 for adults. On a certain day, 2200 people enter the fair and \$5050 is collected. How many children and how many adults attended?

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Sarah E.

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