Find the value of x.
x - 4
153°
2x + 10

(x-4)+(2x+10)=153°. [by using exterior angle sum property]

So x=49°

5

Step-by-step explanation:

There are 3 dots on 2, 1 dot on 3, 4 dots on 4, 2 dots on 6, 3 dots on 7, 1 dot on 8, and 1 dot on 9.

The mean of the data set is the average, so you have to get the total, them divide by the number of dots:

2+2+2+3+4+4+4+4+6+6+7+7+7+8+9=75

75/15=5