Answer:
y equal 7
x equal 4 common algebraic knowledge
(7,3)
Step-by-step explanation:
X= -2+3y
....
-2+3y-3y=-2
-2+3y+3y=16
.......
6y=18
...
y=3
x=7
Answer:
And we can find this probability with the normal standard distribution and we got:
Step-by-step explanation:
Let X the random variable that represent the variable of a population, and for this case we know the distribution for X is given by:
Where
and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
Using this formula we got:
And we can find this probability with the normal standard distribution and we got: