Solve the problem.The voltage E in an electrical circuit is given by E = 1.7 cos 110?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. 
B. 55
C. 
D. 110
Answer: B
Mathematics
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Translate the sentence to an algebraic inequality.A number is less than or equal to -3.
A. x > -3 B. x < -3 C. x ? -3 D. x ? -3
Mathematics
Explain the mistake, then simplify correctly.
= 7(
)2 = 72x + 16 = 49x + 16 - 16 = 49 - 16x = 33
What will be an ideal response?
Mathematics
Let ? = {0, 1}, and let L be the language over ? consisting of all strings of 0’s and 1’s of length 4 with an equal number of 0’s and 1’s. List the elements of L.
What will be an ideal response?
Mathematics
Differentiate.f(x) = 
at x = -1Enter a reduced fraction only.
Fill in the blank(s) with the appropriate word(s).
Mathematics