Determine the row operation that was used on the first matrix to obtain the second matrix.
, 
What will be an ideal response?
-3R2 + R1 ? R1
Mathematics
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Solve the problem.At the beginning of the summer, Jon was 52.4 inches tall. By the end of the summer, he had grown 
What was his height at the end of the summer?
A. 54.1 inches B. 53.1 inches C. 54.2 inches D. 69.4 inches
Mathematics
A pair of similar triangles is shown. Find the measure of the segment marked with the letter x.
A. x = 3 B. x = 1 C. x = 4 D. x = 2
Mathematics
Evaluate the logarithm without the use of a calculator.log31
A. 
B. 0
C. 1
D. 3
Mathematics
Find the exact value of the expression.cos (255° - 15°)
A. 
B. - 
C. 
D. - 
Mathematics