9/20.... Also is the worksheet you’re working on?
Answer:
Division is not closed
explanation:
addition and subtraction are closed for polynomials because the result of adding and multiplying two polynomials is always another polynomial. Division on the other hand is not closed. If you divide two polynomials, the result is not always a polynomial.
Answer: See explanation
Step-by-step explanation:
a. Predict the sales resulting from a $15,000 investment in inventory and an advertising budget of $10,000.
To solve this, in the regression equation, we have to replace x1 with 15 and then replace x2 with 10. This will be:
y = 25 + 10x1 + 8x2.
y = 25 + 10(15) + 8(10)
y = 25 + 150 + 80
y = 255
Therefore, the predicted sales is 255.
b. Interpret b1 and b2 in this estimated regression equation.
A change in b1 which is the inventory investment will bring about a change of 10 units in the sales as long as other values are constant.
A change in b2 which is the Advertising expenditure will bring about a change of 8 units in the sales as long as other values are constant.
Answer:
D
Step-by-step explanation:
the formula of 90 Degree angle
(y,-x)
