Answer:
https://www.calculators.org/math/standard-deviation.php
Step-by-step explanation:
you can calculate standard deviation from here with proper working plus accurate results.
7x + 9y = - 27_________eq1
3x - y = 3__________eq2
Multiply eq 2 by 9 and then add the resulting eq with eq1.
eq2 x 9 gives us 27x - 9y = 27___________eq3
add eq3 with eq1 we get.
34x = 0.
where x=0/34
x=0.
substitute x into any of the above equations to get y.
substitute x into eq1. we get:
7(0) + 9y =-27
9y = -27
y= -27/9
y = -3.
I’m
confused by your question
Answer:
6
Step-by-step explanation:
