Write the expression in the standard form a + bi.If w = 8 + 5i, evaluate w - 
.
A. 0
B. 10i
C. 16
D. -16 + 10i
Answer: B
Mathematics
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Factor completely.x4 - 
A. x 
B. x 
C. x 
D. 
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Tell whether the angle is acute, right, obtuse, straight, or reflex.
A. Acute B. Obtuse C. Reflex D. Straight
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Solve.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 117, 147, 201 B. 109, 147, 201 C. 123, 161, 215 D. 109, 147, 177
Mathematics
Solve the problem.A boat goes 160 miles downstream in the same time it can go 120 miles upstream. The speed of the current is 8 miles per hour. Find the speed of the boat in still water.
A. 28 mph B. 56 mph C. 48 mph D. 64 mph
Mathematics