Decide whether the statement is true or false. If it is false, tell why.The equation (x + 21)2 = 0 has exactly one real solution.
A. True
B. False; the equation has two real solutions.
C. False; the equation has no real solutions.
Answer: A
Mathematics
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Suppose that y is inversely proportional to x. Use the given information to find the constant of proportionality k. Then use y = 
to find y for the given value of x.y = 17.5 when x = 5;
Find y given x = 25.
A. k = 3.5; y = 87.5 B. k = 77.5; y = 3.5 C. k = 87.5; y = 3.5 D. k = 100; y = 4
Mathematics
Simplify the expression.(-3)-2
A. 
B. - 
C. -9
D. 9
Mathematics
Insert < or > to make the statement true.84 _____ -53
A. 84 < -53 B. 84 > -53
Mathematics
Find an equation of a parabola satisfying the given conditions.Vertex (0, 0), focus (4, 0)
A. y2 = 
x
B. y2 = 4x
C. x2 = 16y
D. y2 = 16x
Mathematics