3 years ago

What is 28.7 rounded to the nearest whole number?

Mathematics

2 answers:

artcher [175]3 years ago

8 0

Answer:

Step-by-step explanation:

enot [183]3 years ago

3 0

Answer:

Step-by-step explanation:

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4 years ago

The sum of two numbers is 84. The difference of the two numbers is 32. What are the two numbers.

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Answer:

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The difference of the two numbers is 32:

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3 years ago

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3 years ago

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Please find the answer , it is a very importatnt question

Anna [14]

Step-by-step explanation:

The given expression is :

$\dfrac{2-\sqrt5}{2+3\sqrt5}=\sqrt5 x+y$ ....(1)

Taking LHS of the above expression

$\dfrac{2-\sqrt5}{2+3\sqrt5}$

Rationalizing both denominator and numerator.

$\dfrac{2-\sqrt5}{2+3\sqrt5}\times \dfrac{2-3\sqrt5}{2-3\sqrt5}=\dfrac{4-6\sqrt5-2\sqrt5+15}{2^2-(3\sqrt5)^2}\\\\=\dfrac{19-8\sqrt5}{4-45}\\\\=\dfrac{19-8\sqrt5}{-41}\\\\=\dfrac{\sqrt5 \times 8}{41}+(\dfrac{-19}{41})$

Equation (1) becomes,

$\dfrac{\sqrt5 \times 8}{41}+(\dfrac{-19}{41})=\sqrt 5\ x+y$

Equating both sides,

$x=\dfrac{8}{41}$ and $y=\dfrac{-19}{41}$

Hence, this is the required solution.

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3 years ago