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Lisa I. for tutoring lessons in Chicago IL WyzAnt Tutoring Tutor Tutor United States

Lisa I.

Math tutor specializing in algebra

Chicago, IL (60616)

Travel radius 5 miles
Hourly fee $35.00

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how to the radius if you are only given the perimeter and are of a segment ? (answer)

To do this, you need to know what fraction the wedge represents, which should be given as part of the problem. Either the wedge is defined as being 1/6 or 1/8 or something like that, or the length of the arc segment will be given so that you can compare it to the perimeter to determine this. For...

–x + 3 > 7 (answer)

-x + 3 > 7 -x + 3 - 3 > 7 - 3    This step is straightforward and the same as an equality. -x > 4    It's this next step that confuses a lot of students. -x/-1 < 4/-1   When you divide out the negative, you flip the sign So...

Quadratic Equation Help (answer)

See Nataliya's answer for the full explanation. The key point where you went wrong was on b2. The b value is -1, which means the entire value including the negative sign is being squared, (-1)2=1. So the value under the radical should have been 1+80=81 and you accidentally ended up with...

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