Arectangle measures 12 cm by 10.5 cm. what is the greatest possible error for each measurement?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2