Which expression is equivalent to 3cos^2(theta/2) -3?
3/2 (COS(theta)-1)
3/2 (cos(theta) –5)
3(cos(theta) + 2)
3(cos(theta) + 1)

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.