Solve the quadratic equation by the square root property.2x2 = 30
A. {-15, 15}
B. {16}
C. {-
, 
}
D. {15}
Answer: C
Mathematics
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Find the intervals on which the function is continuous.y = 
A. discontinuous only when x = -1 B. continuous everywhere C. discontinuous only when x = -8 D. discontinuous only when x = 3
Mathematics
Solve the problem.For what numbers x, 0 ? x ? 2?, does cos x = -1?
A. 
, 
B. ?
C. 
D. none
Mathematics
Write the expression in standard form.
A. 
- 
i
B. 
- 
i
C. 
+ 
i
D. 
- 
i
Mathematics
Multiply or divide as indicated. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics