Explain why it does not matter what letter or symbol is used to find an unknown number

1 answer:

6 0

In an equation using x is just a place holder because those numbers are variables so it doesn't matter whether it is x or w.

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Anyone knows how to do 4a)

Olin [163]

Sure. Brainly just made me an Ace.

Let's plug in 1/x as the independent and xy as the dependent in point slope form:

$xy = m (\frac 1 x) + b = \frac m x + b$

We have two points (1/x,xy)=(-4,-2) and (1/x,xy)=(3,5)

That's a slope

$m = \dfrac{5- -2}{3 - -4} = 1$

So a y intercept

5 = 3 + b

b = 2

$xy = \dfrac 1 x + 2 = \dfrac{2x + 1}{x}$

That's easy to solve for y:

$y =\dfrac{2x+1}{x^2}$

When x=1 that's

$y = \dfrac{2+1}{1} = 3$

8 0

3 years ago

Read 2 more answers

Find the positive square root of 217.05 and 100.2001......with division method

Alina [70]

The square root of 217.05 is 14.73 and the square root of 100.2001 is 10.01.

<h3>How to depict the square root?</h3>

It should be noted that square root is factor of a number that when multiplied by itself will give the original number.

In this case, the square root of 217.05 is 14.73 and the square root of 100.2001 is 10.01.

Learn more about square root on:

brainly.com/question/428672

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