Sin a/2 if cos a = -17/8 ( assume sin a/2 is positive) Use half angle identities to find the exact value

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Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Which elements in the set are integers? –8, 3⁄4, √ 18 , 0, √ 16 , 5, –2⁄7, 6 a. –8, 0, 5, 6 b. –8, 0, √ 16 , 5, 6 c. 3⁄4, √ 18 , √ 16 , 5, –2⁄7 d. –8, 0, √ 18 , 5, 6