Answer:
Option B) 9.1
Step-by-step explanation:
We are given the following in the question:
Average score = 490.4
Standard deviation = 63.7
Sample size, n = 49
Formula:

Putting values, we get,
Standard error =

Thus, the correct answer is
Option B) 9.1
Answer:
5 inches
Step-by-step explanation:
23 - 10 - 8 = 5 inches
Distribute 5/7 through the parentheses and add like terms after.
Answer: 11/7x + 11/35y
Answer:
1: Rhombus
2: Square
3: Rectangle
4: Trapezoid (isosceles trapezoid to be exact)