What is the value of cos-1 (-sqrt3/2) ?

Sean knows the length of the base, b, and the area, a, of a triangular window in his bedroom. which formula could he use to find the height, h, of this window?

Which ordered pair could you remove from the relation { (-2, - 1), (-1, 1), (-1, 0), (0, 1), (1, 0) } so that it becomes a function?

What is the seventh term in the addition pattern that begins 17, 32, 47, 62? What is the seventh term in the addition pattern that begins 17, 32, 47, 62? What is the seventh term in the addition pattern that begins 17, 32, 47, 62?

Y=6 when x=2. Find x when y=9

Triangle MNP is dilated to obtain triangle QRS. Using the same scale factor, triangle QRS is dilated to obtain triangle TUV. MN 30 meters, NP 25 meters, PM 25 meters, and QR 42 meters. What is the perimeter, in meters, of triangle TUV?

More the 50 but less than 70 with multiples of 4 and 7

The division property of equality could be used to solve which of the following equations: 5x=30 x+3=7 (x+2) (x-2) = 0 x/4=16

2 shapes A and B, are similar. length of edges in A : length of edges in B = 2.5 The perimeter of A is 210mm work out the perimeter of B

Write 54 as a product of prime factors

A spinner with 10 equal-sized sections numbered 1 to 10 is spun once. What is the probability that the spinner will land on a number that is not a multiple of three?