Represent the quantity by an integer.387 feet below sea level
A. -387
B. 387
Answer: A
Mathematics
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Evaluate.-23
A. 2 B. -4 C. -8 D. 8
Mathematics
Solve the problem.Use the sequence of equations to find a general rule. 1 = 0 + 1 1 + 3 + 1 = 1 + 4 1 + 3 + 5 + 3 + 1 = 4 + 9 . . . . . . . . . . . . . . .Fill in the blank to complete the equation: 1 + 3 + 5 + . . . (2n + 1) + . . . + 5 + 3 + 1 = ?
A. n2 + (n + 1)2
B. (n - 1)2 + (n + 1)2
C. 
2 + 
2
D. n2 + (n - 1)2
Mathematics
Find f(3) for the function f(x) = x^2 -9
What will be an ideal response?
Mathematics
Solve the problem.The voltage E in an electrical circuit is given by E = 5.7 cos 40?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 20
B. 40
C. 
D. 
Mathematics