Write both the expression and the result of the expression.the difference between 12 and 9
A. expression: 12 × 9; result: 27
B. expression: 12 - 3; result: 9
C. expression: 12 + 9; result: 13
D. expression: 12 - 9; result: 3
Answer: D
Mathematics
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Find the length of the curve.The parabolic segment r = 
, 0 ? ? ? 
A. 4 (
+ ln(
+ 1))
B. 
?
C. 
D. 4 (
- ln(
- 1))
Mathematics
Solve the problem.In a certain location, the highest temperature recorded was 100°F. The lowest temperature recorded was 126 degrees less than the highest. What was the lowest temperature?
A. -138°F B. 0°F C. -26°F D. 26°F
Mathematics
Simplify the expression and write the answer without negative exponents.
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality. Write the solution set in interval notation.(x2 - 49)(x2 - 1) > 0
A. (-?, -7) ? (-1, 1) ? (7, ?) B. (-?, -7] ? [-1, 1] ? [7, ?) C. [-7, -1] ? [1, 7] D. (-7, -1) ? (1, 7)
Mathematics