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Rudik [331]
4 years ago
13

Why do we use variables, and what is the significance of using them in expressions and equations?

Mathematics
1 answer:
Olin [163]4 years ago
5 0
Variables are letters from the end of the alphabet
Economics always uses the firsts letter of whatever that letter is representing.

<span> An </span>expression<span> such as 4x</span>3<span> is a </span>variable<span>. It can assume different values because x can assume different values.</span>
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4 years ago
A whole pie is cut into 8 pieces and one slice is taken out, what's the fraction is left?
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8 0
3 years ago
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A 30-meter antenna mast is stabilized by a 34 meter guy wire. How far from the base of the mast is the guy wire secured to the g
Alex
<h2>Hello!</h2>

The answer is: C. 16 m.

<h2>Why?</h2>

The figure is a right triangle, it means that we can solve it by using the Pythagorean theorem which states that, the largest side of a rectangle (hypotenuse) is equal to the sum of the other two side squares:

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34^{2}=a^{2} +30^{2} \\a=\sqrt{34^{2-}30^{2}}=16

Have a nice day!

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