Answer:
X= 0
X= -4
x1= -4, x2=0
Step-by-step explanation:
we are given
exterior angle is 18
so,
now, we can use formula
number of sides of regular polygon = 360/(exterior angle)
so, we get
so, number sides is 20..........Answer
Solve for x
Divide both sides by -4
X= - 10/4
Now simplify by dividing top and bottom by 2
X= -5/2 or - 2 1/2
Answer:
what are the choices
Step-by-step explanation:
Answer:
A, B and C
Step-by-step explanation:
A. Adding another researcher to provide ratings will make the study less biased.
B. A quiz or exam will show which students have a better understanding of the math material. Better quiz or exam results show that the site is more effective for a student with or without the supplemental instruction.
C. Having a greater sample size is better because a greater scope of students is covered. Different students have different abilities and learning preferences.
