Write the answer to the problem as an algebraic expression.Two numbers have a sum of 21. One of the numbers is q. Find the other number.
A. q + 21
B. q - 21
C. 21 + q
D. 21 - q
Answer: D
Mathematics
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Solve. Express your answer as a signed number.In a statistics course, you need to carry out the following computation: 
. Find this number, rounded to the nearest hundredth.
A. 0.42 B. 0.29 C. 0.33 D. 1.9
Mathematics
Solve the rational equation.
= 
A. 
B. 
C. 
D. ?
Mathematics
Write the augmented matrix for the system of equations. 9x + 5z = 8 6y + 3z = 42 3x + 8y + 2z = 66
A. 
B. 
C. 
D. 
Mathematics
Fill in the blank with the correct inequality symbol.If x < 3, then x - 3 
0.
A. ? B. ? C. > D. <
Mathematics