You used the percentage of alcohol and chlorides to predict wine quality (stored in VinhoVerde ). Use the results from that problem to do the following:. a. Determine whether there is a significant relationship between wine quality and the two independent variables (percentage of alcohol and chlorides)
b. at the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the in- dependent variables to include in this model.

unless if u could do my questions, if not i wouldn't want to

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

hi! i think the answer is 1/2 : )

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.