So firstly, we have to find the LCD, or lowest common denominator, of 9 and 7. To do this, list the multiples of 9 and 7 and the lowest multiple they share is going to be your LCD. In this case, the LCD of 9 and 7 is 63. Multiply x^2/9 by 7/7 and 2y/7 by 9/9:

$\frac{x^2}{9}\times \frac{7}{7}=\frac{7x^2}{63}\\\\\frac{2y}{7}\times \frac{9}{9}=\frac{18y}{63}\\\\\frac{7x^2}{63}+\frac{18y}{63}$

Next, add the numerators together, and your answer will be: $\frac{7x^2}{63}+\frac{18y}{63}=\frac{7x^2+18y}{63}$

4 0

3 years ago

Mr. Moore planted a tree in his backyard. His tree grew 3 1/3 feet over five years. if his tree grew at the same rate each year,

alina1380 [7]

Answer:

D. 2/3 per year.

Step-by-step explanation:

3 1

÷ 5

10 × 1

3 × 5

10 ÷ 5

15 ÷ 5

4 0

3 years ago

matrenka [14]

Answer:

11 inch dummy

Step-by-step explanation:

4 + 7=11

4 0

3 years ago