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liberstina [14]

3 years ago

12

Dan goes to a bank to exchange some pounds (£) for euros (€). He has £400 which he wants to exchange. The bank only gives euros

in multiples of 5 euros. The exchange rate is £1 = €1.17 . Find the number of euros he receives and his change from £400 .

1 answer:

raketka [301]3 years ago

3 0

Multiply £400 to €1.17 and you get £468. Since Euros come in fives, he would receive €465 and have €3 change.

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Will give brainiest algebra 2

mars1129 [50]

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Step-by-step explanation:

Let x and y be two numbers

Then,

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Product will be:

$xy$

Given identity is:

$(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2$

Given values are:

Difference of the squares of the numbers= $x^2-y^2=5$

Product of numbers = xy = 6

Putting the values in the identity

$(x^2+y^2)^2=(5)^2+[2(6)]^2\\=25+(12)^2\\=25+144\\=169$

As we have to only find x^2+y^2

Taking square root on both sides

$\sqrt{(x^2+y^2)^2}=\sqrt{169}\\x^2+y^2=13$

The sum of squares of numbers is: 13

Keywords: Identities

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