Combine like terms to write an equivalent expression then use y=5 to prove the expression are equivalent 1+y+y+y+1

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false