Answer:
0.25
Step-by-step explanation:
In mathematics, a parametric equation defines a group of quantities as functions of one or more independent variables called parameters. Generally this parameter is given by t. This type of equations are commonly used to express the coordinates of the points that make up a geometric object like a curve or surface, in which case the equations are collectively called a parametric representation or parameterization. In the figures below, the equation:

matches with this one:

Answer:
180=54,6+17,8+x(the third angle)
Step-by-step explanation:
The three angles in a triangle counted together always give 180 degrees. Therefore, you can use simple equation, in which you subtract the values of the two known angles from 180 (degrees) and the final number will be the value of thethird angle. In this case, it's
180-54,6-17,8=x
107,6=x
In a binomial expansion it has "two terms." In this case you have a + b and a and b are the terms in this expansion. Terms can be numbers or letters and they are separated by the + or - sign.
Hope this helps.