Answer:
21a + 17b
Step-by-step explanation:
To simplify, we need to distribute the 9 to the terms inside of the parentheses that it is being multiplied by and 4 to the terms inside of the parentheses that it is being multiplied by like so:
9(a)+9(b)+4(3a)+4(2b)
9a+9b+12a+8b
Add like terms
21a + 17b
Answer:
15.2 , 21.5 , 27.9 , 29.5
Step-by-step explanation:
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The answer is 12.3 inches
Answer:
4761
Step-by-step explanation:
69*69 = 4761
