Decide whether the relation is a function.{(-5, -2), (-2, -4), (3, -1), (3, 7)}
A. function
B. not a function
Answer: B
Mathematics
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Estimate the square root of the following number, n, by finding a natural number a such that a < 
< a + 1.230
A. 256 B. 16 C. 225 D. 15
Mathematics
Solve the problem.In a right triangle with sides and angles as shown, express cos2 
in terms of a, b, and c. 
A. 
B. 
C. 
D. 
Mathematics
Find the remaining zeros of f(x) given that c is a zero. Then rewrite f(x) in completely factored form.f(x) = x4 + 12x2 - 64; c = 2 is a zero
A. -4; f(x) = (x - 4)(x + 4)(x2 + 4) B. -2, -4, 4; f(x) = (x - 2)(x + 2)(x - 4)(x + 4) C. -2; f(x) = (x - 2)(x + 2)(x2 + 16) D. 2; f(x) = (x - 2)2(x2 + 16)
Mathematics
Simplify the expression.
A. z12 - z11
B. z23
C. z
D. 
Mathematics