3 years ago

When using the binomial formula, which of the following is a correct step in the expansion of (x+y)^4?

1 answer:

5 0

(X+y)^2(x+y)^2
(X^2+2xy+y^2)(X^2+2xy+y^2)
X^2(x^2+2xy+y)+2xy(x^2+2xy+y)+y^2(x^2+2xy+y)

X^4+4x^3y+6x^2y^2+4xy^3+y^4 is the answer.i didn't write all the steps as I would have been too long and complicated

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Find the value of expression when b=9, c=5, d=1/2; expression is 1/2d + c^3 - b

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Answer:

115 3/4

Step-by-step explanation:

$\frac{1}{2} * \frac{1}{2}$ Because d=1/2. 1/2*1/2=1/4

C=5 so, C^3=5x5x5

C=125

Next, b=9

Then, you put everything together.

1/4+125-9=125 1/4-9

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Step-by-step explanation:

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ollegr [7]

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by using the pythagoras' theorem

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3 years ago

How many sixteenths are equal to 5/8

mr_godi [17]

Answer:

The answer would be 10/16.

Hope this helps!

Brianliest?

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3 years ago

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I need help with problem 6) A. Please help.

vampirchik [111]

Answer:

Step-by-step explanation:

The ratios are all 3 father steps to 5 son steps. Then ...

son-steps = 5/3·father steps

son-steps = 5/3·36 = 60

and

father-steps = 3/5·son-steps

father-steps = 3/5·30 = 18

___

As a <em>check</em>, you can realize that the numbers in the first blank, 36:60, are double those in the second blank, 18:30. The first of these, 36:60, is 3 times the row underneath it, 12:20.

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