Solve the system of equations by substitution.
A. (7, 0)
B. (0, -7)
C. (1, -8)
D. no solution
Answer: B
Mathematics
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Complete the magic (addition) square.Use each number 8, 9, 10, 11, 12, 13, 14, 15, and 16 once.
A. 
B. 
C. 
D. 
Mathematics
Which subtraction model (take-away, missing addend, comparison, or measurement) corresponds best to the problem?Jim had 13 oranges and gave away 2 of them. How many oranges did he have left?
A. Missing addend B. Take-away C. Comparison D. Measurement
Mathematics
Write the number in standard decimal form.A computer compiles a program in 5.846 × 10-6 seconds.
A. -5,846,000 B. 0.0000005846 C. 0.000005846 D. 0.00005846
Mathematics
Referring to triangle ABC, find the area of the triangle.
?
?
Round to three significant digits.
?
A. 
B. 
C. 
D. 
E. 
Mathematics