Find the expression as the cosine of an angle.
?
?
?

A.
B.
C.
D.
E.


Answer: C

Mathematics

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Solve.The perimeter of a square is 76 units. Write and solve an equation to find the length of one side, s, of the square.

A. 4s = 76; s = 19
B. s2 = 76; s = 38
C.  = 76; s = 19
D. 4s = 76; s = 361

Mathematics

Find the function value indicated for the function. If necessary, round to two decimal places. If the function value is not a real number and does not exist, state so.Evaluate z(x) =   for z(4)

A. not a real number
B. -3
C. -
D. 21

Mathematics

Solve for the variable. + 3 = 

A. x = 2 B. No solution C. x = 16 D. x = 4

Mathematics

Combine like terms whenever possible. Write the result with descending powers.-6y5 - 9y4

A. -15y5 B. -15y9 C. -15y4 D. Cannot be simplified

Mathematics