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3 years ago

Estimate the sum 458+214

Mathematics

2 answers:

nexus9112 [7]3 years ago

8 0

I’m not sure what you mean by “estimate” but the answer is 672. Hope this helped :)

sertanlavr [38]3 years ago

5 0

672 is the answer to this question

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Find the value of a and b if root3-1/root3+1+ root3+1/root3-1=a+root3 b

Digiron [165]

Answer:

a=4 and b = 0

Step-by-step explanation:

Given : $\dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b$

To find, The value of a and b

Solution,

Solving LHS of the given equation,

$\dfrac{(\sqrt 3-1)^2+(\sqrt3+1)^2}{(\sqrt 3+1)(\sqrt 3-1)}=a+\sqrt 3 b$

Since,

$(a-b)^2=a^2+b^2-2ab\\\\(a+b)^2=a^2+b^2+2ab\\\\(a-b)(a+b)=a^2+b^2$

So,

$\dfrac{3+1-2\sqrt 3+3+1+2\sqrt 3}{3-1}=a+\sqrt 3 b\\\\4=a+\sqrt 3 b$

$4+0=a+\sqrt 3 b$

On comparing we get :

a = 4 and b = 0

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3 years ago

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Lapatulllka [165]

It’s is 6 because I added it all up and all you have to do is division

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3 years ago

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Radda [10]

Answer:

Step-by-step explanation:

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3 years ago

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givi [52]

Answer:

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Step-by-step explanation:

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3 years ago

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andrew11 [14]

Answer:

Step-by-step explanation:

A. because the line of best fit has to be at best fit between the points so is a good approximation of where all the points are heading when you try to predict something.

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3 years ago