Answer:
5x+6+48+81=180°
5x+135=180
5x=45
x=9
Step-by-step explanation:
I HOPE it will help you
Answer:


Step-by-step explanation:
For this case we have the following info given:
Weight before diet 180 125 240 150
Weight after diet 170 130 215 152
We define the random variable
and we can calculate the inidividual values:
D: 10, -5, 25, -2
And we can calculate the mean with this formula:

And the deviation with:

And after replace we got:

And the confidence interval for this case would be given by:

The degrees of freedom are given by:

For the 95% of confidence the value for the significance is
and the critical value would be
. And replacing we got:


You don't say if the answer needs to be rounded
the height is 77.27 meters ( not rounded)
see attached picture for solution:
Answer:
D
Step-by-step explanation:
If you plug it into desmos, this is the answer.