Solve the problem.A rectangle has a length of x + 3 and a width of x - 3, and has an area of 40 square units. Find the length and width of the rectangle. (A = LW)
A. width = 5 units; length = 8 units
B. width = 4 units; length = 10 units
C. width = 2 units; length = 20 units
D. width = 1 unit; length = 40 units
Answer: B
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A. -10i - 25j B. 4i + 3j C. 15i - 6j D. 20i + 4j
Find the coordinates of the midpoint of the line segment PQ.P(w, x), Q(x, w)
A. (w + x, w + x)
B. (wx, wx)
C. 
D. 
Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant II, and cos ? = 
, ? lies in quadrant I
Find cos (? - ?).
A. 
B. 
C. 
D. 
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree 3: zeros: 1 + i and -7
A. f(x) = x3 -7x2 - 12x - 12 B. f(x) = x3 + 5x2 - 12x + 14 C. f(x) = x3 + 5x2 + 14x - 12 D. f(x) = x3 + x2 - 12x + 14