Rewrite the quadratic function in standard form by completing the square.f(x) = x2 - 18x
A. f(x) = (x + 9)2 - 9
B. f(x) = (x - 18)2 - 324
C. f(x) = (x + 18)2 - 18
D. f(x) = (x - 9)2 - 81
Answer: D
Mathematics
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Let U = {q, r, s, t, u, v, w, x, y, z}, A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. List the elements in the following set.
A. {t, v, x} B. {r, t, v, x} C. {s, u, w} D. {r, s, t, u, v, w, x, z}
Mathematics
Give the additive inverse of the number.-28
A. -28
B. 28
C. 
D. 0
Mathematics
Round each number to its largest place value to estimate the quotient.898,539 ÷ 35
A. 225 B. 22,500 C. 2000 D. 20,000
Mathematics
Decide whether the slope is positive, negative, zero, or undefined.
A. Zero B. Undefined C. Negative D. Positive
Mathematics