Evaluate cos17pi/6

sq root3/2
-sq root3/2
1/2
-1/2

Simplify the expression. -2/5(10+15m-20n)

Aiko jumped rope for 20 min and stopped at 8: 05 when did she start

Write a ratio and a percent for the shaded area. it is 3x3 and 5x5 grid there is 6 shaded out of a. 6 over 25 , 30% b. 3 over 50 , 6% c.6 over 25 , 24% d. 3 over 10 , 30%