LoserMcBadface
20.10.2020 •
Mathematics
Which expression is equivalent to 1/27
A. 3^1 x 3^-10
B. 3^-1 x 3^10
C. 3^-4 x 3^7
D. 3^4 x 3^-7
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Ответ:
see below
Step-by-step explanation:
11a -2(x^2 -3)
Distribute
-2*x^2 -2(-3)
-2x^2 +6
11b 2x(x+4)
Distribute
2x*x +2x*4
2x^2 +8x
12 The perimeter is the sum of all sides
The top is equal to the bottom and the left side is equal to the right
x-10 + x+20+x-10+x+20
Combine like terms
4x +20