Answer:
The class width is 20
Step-by-step explanation:
In a frequency or a relative frequency distribution the class width is calculated as the difference between the lower or upper class limits of consecutive classes. A point to note is that all the categories or classes usually have the same class width.
We use the first two classes to calculate the class width by using their respective upper limits;
Class width = 89 - 69
Class width = 20
Answer:
C
Step-by-step explanation:
Cos (angle) = Adjacent/Hypotenuse
Cos 20° = 12/x
Answer:
x = 3
Step-by-step explanation:
AC and BD are going to be the same measure. We can make an equation and solve for x.
3x + 1 = 4x - 4
~Add 1 to both sides
3x = 4x - 3
~Subtract 4x to both sides
-x = -3
~Divide -1 to both sides
x = 3
Best of Luck!
