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2 years ago

I need help on this hurry please

Mathematics

1 answer:

julsineya [31]2 years ago

3 0

Answer:

x=70

Step-by-step explanation:

sum is angles of a Pentagon=540°

x°+138°+2x°+80°+112°=540°

3x°+330°=540°

3x°=540°-330°

3x°=210°

3x°/3°=210°/3°

x=70

hope this is helpful

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Option C:

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Given expression:

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Here $a=2 x, b=y$

Substitute in the binomial formula, we get

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Now to expand the summation, substitute i = 0, 1, 2, 3, 4 and 5.

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Let us solve the term one by one.

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$$\frac{5 !}{4 !(5-4) !}(2 x)^{1} y^{4}= 10 x y^{4}$

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Substitute these into the above expansion.

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Option C is the correct answer.

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