Subtract 3 from each side:
3x = -30
Divide each side by 3 :
x = -10
Since you already have y isolated on one equation it's easy. Plug in 3x-11 as for for the second equation. Solve and find what x equals. Then plug the x into the first equation to find y. Hope this helps!
Answer:
B) 6 times
Step-by-step explanation:
54/9=6
Answer:
You find percent of change
by finding the differences between the numbers given
and by setting up a fraction to find the change because percentages deals with fractions
Then you simplify ur fraction by multiplying by 100
Step-by-step explanation:
e.g
find the percent of change from 20 to 80
find their differences
80-20= 60
set up a fraction
60/20
simplify your fraction by multiplying over 100
60/20*100
3*100=300%. answer
Answer:
0.8676
Step-by-step explanation:
Given that :
Total Sum of Square (SST) = 103.5
Regression Sum of Square (SSR) = 89.8
Erroe Sum of Square (SSE) = 13.7
The Coefficient of determination (R²) :
R² = SSR / SST
R² = 89.8 / 103.5
R² = 0.8676328
R² = 0.8676
