Answer:
6
Step-by-step explanation:
By the diagram you can see that the upper quartile is 6. Also this answer was calculated and checked!
Answer:
y=10
Step-by-step explanation:
10^2-100=0
100-100=0
0=0
Answer: x= 8, -8
explanation: i used the app m a t h w a y s
We'll have to repeatedly square both sides of the equation, in order to get rid of the square roots. Squaring a first time yields

Move the 19 to the right hand side:

And square again:

Square one last time:

Let's check the solutions: all these squaring might have created external solutions:

So,
is a feasible solution.