What is the solution to the system of equations?

(11, 1)
(1, 11)
(–1, 11)
(11, –1)

What is the measure of ac? 5 units 13 units 26 units 39 units

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

What is the benefit of converting measures in a ratio to the same unit