H^2=x^2+y^2
9^2=4^2+x^2
81=16+x^2
x^2=65
x=8.1cm
2x + 14 + 6y (multiply everything by 2)
A variable is an unknown like x so
first we start with
x=8
then we subtract (because you must add to reverse subtraction)
x-2=8-2
x-2=6
then we divide ( because you must multiply to reverse division)
(x-2)/3=6/3
(x-2)/3=2
find x
Answer:
Step-by-step explanation:
Y = 389.10 - 14.6 X.
Here when X increases Y decreases so correlation coefficient is negative .
correlation coefficient = - √ .657
= - .81
Answer:
56 minutes
Step-by-step explanation:
