Answer:
55
Step-by-step explanation:
substitute 2 into j
so do 18 x 2= 36
36+19=55
j=55
Step-by-step explanation:
x^2=9/49
√x^2=√9/49
x=+or-3/7
For this case we must clear x from the given equation:

We passed 23 subtracting the other side of equality:

By definition,
is written as 
So, we have:

So, the solution of
for x is:

Answer:



Answer:
-4
Step-by-step explanation: