Answer:
y= -2x+1
Step-by-step explanation:
y=mx+b
Substitute the ordered pairs into the equation
So:
y= -1 m(slope) = -2 x=1 b=?
-1 = (-2)(1) + b
-1 = -2 +b add 2 on both sides to get b by itself
-1 +2 = b
b=1
Answer:
8.7 * 10^7
Step-by-step explanation:
Scientific notation is a representation of huge but countable numbers at it's unit place with an expansion of the powers of 10.
Hence,
87,000,000
=87*10^6
=8.7*10^7
Answer:
The number of weeks required = 216 weeks
Step-by-step explanation:
Given that:
Margin of Error E = 200
Confidence interval = 95% = 0.95
Level of SIgnificance = 1 - C.I
= 1 - 0.95
= 0.05
Standard deviation = 1500
The Critical value for Z :

The number of weeks( i.e the sample size (n) ) required is :



n = 216.09
n ≅ 216 weeks