Answer:
The class width is 
Step-by-step explanation:
From the question we are told that
The upper class limits is 
The lower class limits is 
The number of classes is 
The class width is mathematically represented as

substituting values



Since
Answer:
Reflection over the x-axis
Step-by-step explanation:
To get from Triangle A to Triangle B, Triangle A must be reflected over the x-axis. On Triangle A, the left-most point is at (1, -2). The corresponding point on Triangle B is at (1, 2). The rule for reflecting over the x-axis is (x, y) -> (x, -y). So, (1, -2) -> (1, 2).
I hope this helps :))
Subtract 3 from both sides:
2/3z=4
divide by 2/3 on both sides (multiple 3/2 on both sides)
z= 6
Answer:
x = 220°
Step-by-step explanation:
∠AEB = ∠ABE = (180 - 80) /2 = 50 (isosceles triangle property)
∠BED = 90
x = 360 - 90 - 50 =220