Write the expression in the standard form a + bi.
10
A. 
+ 
i
B. 
- 
i
C. - 
+ 
i
D. - 
- 
i
Answer: D
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At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Greater than 13.4 seconds
A. 84% B. 98% C. 2.5% D. 97.7%
Evaluate the expression.(-2)0
A. 0 B. 1 C. -2 D. -1
Solve the problem.An Algebra class had 5 tests over the course of the semester. The table gives the average and high score for each of the 5 tests.
For what tests was the high score greater than 97 or the average greater than 80.
A. Test 1, Test 2, Test 3, Test 4 B. None C. Test 1, Test 4 D. Test 1, Test 2, Test 4
First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number.
A. Estimate: 52; Exact: 29
B. Estimate: 52; Exact: 51
C. Estimate: 53; Exact: 52
D. Estimate: 51; Exact: 52