You solve this kind of problem by using proportion
$ / people = 120 / 8 = x / 20
Cross multiply 120 x 20 = 2400
8x =2400
Divide 8 on both sides
x = 300
The performer will earn $300 when 20 people attend a performance.
An example of congruence similarity and transformations work is " If the measures of the angles of a triangle are in the ratio 4 : 5 : 9. The triangle is?.
<h3>What is right angled triangle?</h3>
A right triangle is known to be often called right-angled triangle. It is said to be a triangle that is composed of one angle which is at a right angle and two sides which are said to be perpendicular.
So lets take the angles to be 4x, 5x and 9x
We add them to be 4x + 5x + 9x =180°
18x=180° =
x= 180/18
x = 18
So therefore the angles are:
4×10°
=40°
5×10°
=50°
9×10°
=90°
So therefore since one of the angle is 90° and as such, the triangle is right angled triangle.
Learn more about transformations from
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