Add or subtract. Then simplify. If a denominator has two or more factors (other than monomials), leave it in factored form. Express the answer using the denominator of the first fraction when applicable.
- 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Factor the polynomial completely.81x2z + 126xyz + 49y2z
A. z(9x + 7y)2 B. z(9x + 7y)(9x - 7y) C. z(9x - 7y)2 D. (9xz + 7yz)2
Mathematics
Use the roster method to write the given set of numbers. Interpret "between a and b to include both a and b."The whole numbers between -2 and 3
A. {1, 2, 3} B. {0, 1, 2} C. {-2, ..., 1, 2, 3} D. {0, 1, 2, 3}
Mathematics
Compute the product.
Mathematics
Determine whether the ratios are proportional. If they are, write a corresponding proportion.
A. yes; 
= 
B. no
Mathematics