Answer:
2x + 10
Step-by-step explanation:
To expand (using the distributive property) <u>multiply</u> the number outside the bracket i.e. in this case '2', with the <u>values inside the brackets</u>.
So multiply '2' and 'x' and '2' and 5' and add or subtract on basis of whether the second value is positive or negative.
So
2(x + 5)
= (2*x)+(2*5)
=2x+10
<em>extention note:</em> <u>be careful</u> when the symbol within the equation within the brackets is a subtraction because it implies that the second value would instead be a negative number and should be treated as such.
an example
2(x-5)
= (2*x)+(2*-5)
=2x -10
Anyhow, I hope this helped!
Answer:
80
Step-by-step explanation:
It's supplementary to angle DAC.
9514 1404 393
Answer:
c. Their correlations are the same, but the equations are different
Step-by-step explanation:
The formula for the correlation coefficient of two variables is symmetrical: it is unchanged when the variables are interchanged. This means Juan and Belle will both calculate the same correlation coefficient.
The formulas for the linear regression equation depend on the choice of dependent and independent variable. Since Juan and Belle have made opposite choices for those, their equations will be different. (Each function will be the inverse of the other.)
The appropriate description is found in choice C.
Answer:
-200
Step-by-step explanation:
(happy to help)
