What’s the answer help pls

7

Step-by-step explanation:

Triangle Proportionality Theorem : If a line parallel to one side of a triangle intersects the other two sides of the triangle, then the line divides these two sides proportionally.

=     Set up proportions

=        Cross multiply

18x = 126   Divide to isolate x

x = 7

1/5^2 = 7.56/45

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or