Find the expression.u = 5i + j, v = -6i - 9j ; Find 7v - u.
A. -37i + 64j
B. 64i + 47j
C. -47i - 64j
D. -47i - 6j
Answer: C
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Solve the problem.A rectangular solar cell panel has a perimeter p and a width w. Express the area A of the panel in terms of p and w and evaluate the area for p = 250 cm and w = 51 cm. Round your answer to the nearest cm2.
A. 
; 12,648 cm2
B. 
; 6375 cm2
C. 
; 8976 cm2
D. 
; 3774 cm2
If the height, n, of a trapezoid equals the length of its shorter base and the longer base is twice the shorter base, then the area of the trapezoid is
(a) 2n (b) 3n2 (c) 1.5n3 (d) 1.5n2 (e) None of these is correct.
Use the given zero to completely factor P(x) into linear factors.Zero: -1; P(x) = x4 + 15x3 + 49x2 - 15x - 50
A. (x + 10)(x + 5)(x - 1)2 B. (x + 1)(x - 1)(x - 5)(x - 10) C. (x + 10)(x + 5)(x + 1)(x - 1) D. (x + 5)(x + 1)(x - 1)(x - 10)
Solve.
+ 5 = x
A. 2 B. 2, 9 C. 9 D. 9, 18