State if the three numbers can be the measures of the sides of a triangle.
1) 12, 12, 12

2) 6, 11, 13

3) 11, 12, 16

4) 7, 8, 18

5) 6, 12, 21

6) 7, 10, 7

7) 8, 7, 1

8) 11, 22, 9

9) 10, 6, 3

10) 10, 19, 7

11) 6, 5, 6

12) 6, 3, 12

13) 7, 4, 6

14) 13, 7, 9

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?