Mathematics: Can someone help me pls :(

Can someone help me pls :( - id14621622, myla18jabbar

Ответ:

Yaoicx681

19.10.2021

a=11, b=2

Step-by-step explanation:

Keep in mind that $4-\sqrt{5}$ and $4+\sqrt{5}$ are conjugates of each other. While it's typically known for rationalization of the denominator, getting an integer answer helps to simplify the fraction as shown in steps 5-7:

$\frac{(4-\sqrt{5})(4+\sqrt{5})}{2\sqrt{11}}$

$\frac{4(4)+4(\sqrt{5})-4(\sqrt{5})-\sqrt{5}(\sqrt{5})}{2\sqrt{11}}$

$\frac{16+4\sqrt{5}-4\sqrt{5}-5}{2\sqrt{11}}$

$\frac{16-5}{2\sqrt{11}}$

$\frac{11}{2\sqrt{11}}$

$\frac{\sqrt{11}\sqrt{11}}{2\sqrt{11}}$

$\frac{\sqrt{11}}{2}$

Therefore, a=11 and b=2

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Ответ:

VanessaMyers411

18.05.2021

Mathematics

line c

Step-by-step explanation: we know that

If two figures are similar, then the ratio of its corresponding sides is equal and is called the scale factor

Let

z> the scale factor

m> the distance from P to the dilated line

we have

The dilated line at units of P is the line c

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Can someone help me pls :(

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