1. which method would be the simplest way to solve the system?
7x + 5y = 19
–7x – 2y = –16

a. graphing
b. substitution
c. elimination
d. distributive

2. what is the solution of the system?
7x + 5y = 19
–7x – 2y = –16

a.(2, 1)
b.(1, 2)
c.(7, 5)
d.(–7, –2)

Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Is a square always, sometimes, or never a parallelogram