Use the indicated row operation to change the matrix.Replace R2 by R1 + R2.
A. 
B. 
C. 
D. 
Answer: A
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Use the problem-solving strategy for applications of linear equations to solve the application problem.The area of a triangular flag is 132 cm2. If the height of the flag is 22 cm, what is the length of the base?
A. 6 cm B. 12 cm C. 126 cm D. 3 cm
Provide an appropriate response.Explain and correct the error in the following problem: 
4. 1 7
What will be an ideal response?
Solve. Use ? ? 3.14 when necessary.A 20-foot ladder is leaning against a house with the base of the ladder 4 feet from the house. How high up the house does the ladder reach? Round to the nearest tenth foot.
A. 19.2 feet B. 20.4 feet C. 16 feet D. 19.6 feet
The primary reason that companies provide cash discounts to customers who pay for their credit purchases on or before a specified date is to speed up the collection period.
Answer the following statement true (T) or false (F)