Solve using the substitution method. Use a graphing calculator to check your answer. x + 2y = 167x + 14y = 112
A. (7, 7)
B. (0, 0)
C. No solution
D. Infinitely many solutions
Answer: D
Mathematics
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Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
Mathematics
Establish the identity.
= 
What will be an ideal response?
Mathematics
Approximate. Round to the nearest thousandth.
A. 1.900 B. 2.352 C. 3.606 D. 2.351
Mathematics
Solve. Provide answers in interval notation.3 ? 
A. 
B. 
C. 
? 
D. 
? 
Mathematics