4 years ago

What property was used to rewrite the polynomial expression (x+5)+3(a+(6x)y) to 5+(x+3a+(18x)y)

1 answer:

4 0

3(a+(6x)y) was clearly multiplied out as seen by the 3a and 18xy, so the distributive property was used there. In addition, the commutative and associative properties state that you can rearrange sums, so those were used too

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(0,-7)

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3 years ago

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the fraction of surface that is not covered is 11/36

Step-by-step explanation:

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s = π * r^2

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d1 = 20

d2 = 24

r1 = 20/2

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r2 = 24/2

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to know the part that is not covered we simply do the s1 over the s2 and we subtract that from 1

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25/36

1 we subtract this

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