The triangle JOY is translated to another triangle which each points is moved to the right by 3 and moved downward by 2. So if a two segments is connected of two of each points, the result is that they have the same length and they are parallel to each other. So the answer is C.
Set up the equation by writing the number of students in the ratio as a fraction:
3/4= (245-x)/x Cross multiply:
3x= 4(245-x) Multiply on right:
3x= 980-4x Add 4x on both sides:
7x= 980 Divide both sides by 7:
x= 140 this is how many girls there are. And:
245-140= 105= boys
To help you you should find a common denominator and then the fraction that has lower numbers is bigger
(2x/-5x)+x^2
(x(2)/(x(-5))+x^2
(-2/5)+x^2, the x values cancel in numerator and denominator and simplify to -2/5
