Solve the problem.The length of an airconditioning filter is to be between 
and 
and its width is to be between 
and 
Express the possible areas A as an inequality and graph the values of A.
A =
area in hundreds of sq. in.
A. 300 < x < 600
A = area in hundreds of sq. in.
B. 400 < x < 700
A = area in hundreds of sq. in.
C. 400 ? x ? 700
A = area in hundreds of sq. in.
D. 300 ? x ? 600
A = area in hundreds of sq. in.
Answer: A
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Write the complex number in trigonometric form, using degree measure for the argument.2
- 2i
A. 4(cos(-60°) + i sin(-60°)) B. 4(cos 30° + i sin 30°) C. 4(cos(330°) + i sin(330°)) D. 4(cos 150° + i sin 150°)
Solve the problem.Find the 13th hexagonal number that corresponds to the following dot sequence.
A. 351 B. 286 C. 98 D. 325
Using the addition/subtraction method, find the value of x and y to satisfy the following equations: 5x - 5y = 8; 7x - 5y = 20
a. x = -6 y = -4.4 b. x = 6 y = 4 c. x = 4.4 y = 6 d. x = 6.4 y = 4 e. x = 6 y = 4.4
Use the square root property to solve the quadratic equation.x2 = - 16
A. ± 256 B. - 4 C. ± 4 D. no real solution