Write the expression in the standard form a + bi.2i15 - i7
A. -1
B. -i
C. i
D. 1
Answer: B
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Solve the problem.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 18 mi, the distance between the cars was 6 mi more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 36 mi B. 30 mi C. 24 mi D. 18 mi
Solve the problem.A weather forecaster has predicted a high temperature of 20°C for tomorrow. Find this temperature in degrees Fahrenheit. If necessary, round to the nearest tenth of a degree.
A. 43.1°F B. 68°F C. 4°F D. -20.9°F
Find the square root. Do not use a calculator. Do not refer to a table of square roots.
A. 4096
B. 8
C. 64
D. 
Write down all the subsets of the given set.{p, q, r}
A. {p}, {q}, {r}, {p, q}, {p, r}, {q, r}, {p, q, r} B. ?, {p}, {q}, {r}, {p, q}, {p, r}, {q, r} C. ?, {p}, {q}, {r}, {p, q}, {p, r}, {q, r}, {p, p}, {q, q}, {r, r}, {p, q, r} D. ?, {p}, {q}, {r}, {p, q}, {p, r}, {q, r}, {p, q, r}