Answer:
The sample size is
Step-by-step explanation:
From the question we are told that
The margin of error is 
From the question we are told the confidence level is 97.5% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of
is
Generally we will assume the sample proportion to be 
Generally the sample size is mathematically represented as
=>
=>
All real numbers / all x
if you're asking for range as well then its -1<x<1
Answer:
x=54
Step-by-step explanation:
easy
180 is a triangle
so
exterior+interior=180
so 180-123
57
now add all up to 180
180=57+x+69
x=54
Answer: Just work step by step managers
Step-by-step explanation:
2x + 8y = 5
2/ 24x - 4y = -15
2x + 8y = 5
48x - 8x = -30
+
--------------------------
50x = -25
x = -1/2
2 * -1/2 + 8y = 5
-1 + 8y = 5
8y = 6
y = 6/8
y = 3/4
x = -1/2 y = 3/4