Answer:
9
Step-by-step explanation:
- [X-2]+3=10
- [X-2]=10-3
- X=7+2
- X=9
Answer and Step-by-step explanation:
a)
expected value for the difference in sample means=3.5-3.2=0.3
b)
standard deviation of the sampling distribution of the difference in sample means
=sqrt((0.5^2/40)+(0.8^2/40))
=0.1492
c)
z=(0.3-0)/0.1492
z=2.01
P(z>2.01)=0.0222
Answer:
2.24384236453
Step-by-step explanation:
division/división
Step-by-step explanation:
-3x + 6y = -27 |-1×|
3x - 6y = 27 |1×|
3x - 6y = 27
3x - 6y = 27
Two equations are similar.
X,Y element R
