Solve.Two numbers total -2, and their difference is 16. Find the two numbers.
A. 0 and - 2
B. -2 and 2
C. 7 and - 9
D. - 1 and - 17
Answer: C
Mathematics
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Write the negation of the proposition.She earns more than me.
A. She earns the same as me. B. She does not earn more than me. C. She does not earn less than me. D. She earns less than me.
Mathematics
The hydrogen ion concentration of a solution is 0.007 mol/L [H+]. What is the pH of this solution?
A. 0.007 B. 11.8 C. 2.2 D. 1.02
Mathematics
Perform the operation and write the result in standard form.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve. If no solution exists, state this.
= 
A. - 18
B. - 
C. 18
D. - 
Mathematics