Write a paragraph proof of this theorem: In a plane, if two lines are perpendicular to the same line, then they are parallel to each other.

Given: R ] S, T ] S

Prove: R II T

A circular tablecloth has a radius of 3.5 feet. Lyle is sewing a piece of ribbon around the edge of the tablecloth. If Lyle has exactly enough ribbon, which measurement is closest to the length of the piece of ribbon in feet?

Harry notes that the state sales tax went from 2% to 2.5%, which he says is not too bad because it's just a one-half percent increase. But Linda says that it really is bad because it's a 25% increase. Who's right, and why?

Factor the Polynomials x^3+9100 20^3+160 343x^3-125 x^3-512

Write a recursive definition for the set of odd positive integers.

100 minus what equals 52.7

Consumer Price Index, 1970-2002 Year CPI 1970 116.3 1975 161.2 1980 248.8 1985 322.2 1990 391.4 1995 456.5 2002 535.8 Source: World Almanac 2003 Describe how the CPI is related to the year. a.

Using the distributive property what is 3 (x + 12)

Jessica buys a basket of oranges on sale for 12$ before tax. the sales tax is 6%. what is the total price jessica pays for the basket of oranges?

20 + 23 - 34 + 2 x 4^2

ou are standing 45 meters from the base of the Empire State Building. You estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82°.