Perform the indicated operation.u = 9i + j, w = i - 4j; Find 7u - 6w.
A. 57i + 4j
B. 57i - 17j
C. 21i + 31j
D. 57i + 31j
Answer: D
Mathematics
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Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A ? B) = n(B ? A)
A. True B. False
Mathematics
Translate the word statement into a percent proportion. Do not solve.16 is 55% of what number?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Rationalize the denominator of each fraction.
A. 
B. 
C. 
D. 
Mathematics
Find the slope of the tangent line to the graph at the given point.f(x) = x2 + 11x - 15 at (1, -3)
A. -9 B. 11 C. 26 D. 13
Mathematics