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elena55 [62]
3 years ago
11

Can anyone find this?

Mathematics
1 answer:
kicyunya [14]3 years ago
5 0

Answer:

628 inches cubed

Step-by-step explanation:

1. 3.14*10= 31.4

2. 31.4*20=628

628 in cubed

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Answer:

a)  -2x^2+5xy

b)  -3y^2+5xy

Step-by-step explanation:

<u>Part (a)</u>

Given polynomial  :2x^2+3y^2-5xy+1

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(2x^2+3y^2-5xy+1)+(-2x^2+5xy)

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<u>Part (b)</u>

Given polynomial  :2x^2+3y^2-5xy+1

The binomial that should be added to the given polynomial to get a polynomial that does not contain the variable y is:

-3y^2+5xy

(2x^2+3y^2-5xy+1)+(-3y^2+5xy)

=2x^2+3y^2-5xy+1-3y^2+5xy

=2x^2+3y^2-3y^2-5xy+5xy+1

=2x^2+1

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