The value of the expression is
-2(2a-4b+3c)
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Answer:
90 degrees
Step-by-step explanation:
58+32= 90
Answer:
57.5 feet
Step-by-step explanation:
The kitchen is a rectangle and she wants to buy 5 feet of wallpaper. And she buys 62.5 feet of wallpaper border. Just subtract 62.5 and 5 and you get 57.5 feet.
We know that we can do
ab+ac=a(b+c)
so find common factor
factor them
27a=a times 3 times 3 times 3
21=3 times 7
common factor=3
3=a
27a/3=9a
21/3=7
so now we have
(3)9a+(3)7=3(9a+7)