Write the augmented matrix for the system. Do not solve. 5x + 2y = 47-2x + 7y = -11
A. 
B. 
C. 
D. 
Answer: D
You might also like to view...
Evaluate the integral.
dx
A. 
B. 
C. 
D. 
Perform the indicated operation
On a recent math test a student missed 4 True/False questions worth 2 points a piece and 3 word problems worth 2.5 points each. If the total number of points possible was 100, what was the student’s score?
Solve for the principal.Brianna notes that her savings account earned $117.67 in 3 months. If the account earns 5.4% simple interest, then what was her principal?
A. $14,817.27 B. $7844.44 C. $8716.30 D. $18,303.68
Solve the problem.Some people must eat a low-sodium diet with no more than 2000 mg of sodium per day. By eating 1 cracker, 1 pretzel, and 1 cookie, a person would ingest 149 mg of sodium. If a person ate 8 pretzels and 8 cookies, he or she would ingest 936 mg of sodium. By eating 6 crackers and 7 pretzels, a person would take in 535 mg of sodium. Which of the following statements is true?
A. A cookie contains 71 mg of sodium. B. A pretzel contains 49 mg of sodium. C. A cracker contains more sodium than a cookie D. A cracker contains 30 mg of sodium.