Prove that sin^2 pi/6 + cos^2 pi/3 - tan^2 pi/4 = - 1/2

If the sides of a square are lengthened by 7 feet, the area becomes 121 square feet. How long is a side of the original square?

Give the digits in the tens place and the tenths place. 37.95

What are the negatively charged particles in an atom called?

What is 3x^2+x-14 factored?

What two values can replace - 17x?

James spent $20.16 on comic books. each book cost 0.72 he sold ea one for 0.20 less than he paid how much was received ftom selling books

Mick has a bag with 2 mint sticks, 11 jelly treats, and 7 fruit tart chews. If he eats one piece every 10 minutes, what is the probability his first two pieces will be a jelly treat and a mint stick? Give your answer in a percent.

What is the value of 5x^3+4y^3 when x=4 and y=3?

Find the rate and unit rate: 216 miles per 9 gallons A: 24 miles per 1 gallon B: 42 miles per 1 gallon C: 25 miles per 1 gallon D: 16 miles per 1 gallon

At 8:00 a. m., the outside temperature was - 16°. by 9:00 a. m., the outside temperature had dropped 6.5°. what was the outside temperature at 9:00 a. m.? a. 22.5° b. 9.5° c. - 9.5° d. - 22.5°