Mean is 
and a standard deviation is 
, then the variable 
.
Use substitution
.
This substitution gives you that 
.
a. For X=130, 
and 
(the decimal value is taken from the Standard Normal Distribution Table).
b. For X=90, 
and for X=110, 
. Then 
(the decimal value is taken from the Standard Normal Distribution Table).
Answer:
A. {4,3}
Step-by-step explanation:
x -2y = -2
y = - 3x +15
x - 2(-3x+15) = -2
x +6x - 30 = -2
7x = 28
x = 4
y = - 3x +15 = - 3*4 + 15 = -12 + 15 = 3
{4,3}
You have to divide. 1500/25 = 60
Answer:
15.5
Step-by-step explanation:
The plus of two angles in the picture are 90 degrees: 37° + 53°
Answer:
<h3>
P(-5, -1)</h3>
Step-by-step explanation:
If M is midpoint of AP then:
