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Sergeu [11.5K]
3 years ago
6

Can someone help me with a math problem

Mathematics
1 answer:
Veronika [31]3 years ago
7 0
First, you would start by adding 7 8/15 and 11 1/6 together. Starting with the whole numbers you would add 7 and 11, getting 18. You would then multiply 8/15 by 2/2 and 1/6 by 5/5, making them 16/30 and 5/30, you then add them getting 21/30, or 7/10. Then add 18 and 7/10 together, getting 18 7/10. Finally, subtract 13 1/6 from 18 7/10. You would start by subtracting 13 from 18, getting 5. Then you would multiply 1/6 by 5/5 and 7/10 by 3/3, getting 5/30 and 21/30, you would subtract 5/30 from 21/30, getting 16/30. Finally, you would add 16/30 and 5 with each other, getting 5 16/30.
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Answer:

Types of polygon

Polygons can be regular or irregular. If the angles are all equal and all the sides are equal length it is a regular polygon.

Regular and irregular polygons

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To find the sum of interior angles in a polygon divide the polygon into triangles.

Irregular pentagons

The sum of interior angles in a triangle is 180°. To find the sum of interior angles of a polygon, multiply the number of triangles in the polygon by 180°.

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(n - 2) * 180  (where n is the number of sides)

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2 years ago
Find f(x) and g(x) so that the function can be described as y = f(g(x)).<br><br> y = 4/x^2+9
dlinn [17]

I'm assuming all of (x^2+9) is in the denominator. If that assumption is correct, then,

One possible answer is f(x) = \frac{4}{x},  \ \ g(x) = x^2+9

Another possible answer is f(x) = \frac{4}{x+9}, \ \ g(x) = x^2

There are many ways to do this. The idea is that when we have f( g(x) ), we basically replace every x in f(x) with g(x)

So in the first example above, we would have

f(x) = \frac{4}{x}\\\\f( g(x) ) = \frac{4}{g(x)}\\\\f( g(x) ) = \frac{4}{x^2+9}

In that third step, g(x) was replaced with x^2+9 since g(x) = x^2+9.

Similar steps will happen with the second example as well (when g(x) = x^2)

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