Determine whether the pair of vectors is orthogonal.3i - 8j, -8i - 3j
A. Yes
B. No
Answer: A
Mathematics
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Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.What is the approximate average annual rainfall over the last 80 years?
A. 4.3 inches B. 5.2 inches C. 3.2 inches D. 6.1 inches E. none of these
Mathematics
Use the multiplication property of equality to solve the equation. -k = 21
A. -20 B. 20 C. -21 D. 21
Mathematics
Perform the matrix operation.Let A = 
. Find 2A.
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics