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2 years ago

Every positive real number has a positive and a negative square root, the ________ root is called the principal root. *

Mathematics

1 answer:

fomenos2 years ago

5 0

9514 1404 393

Answer:

B) positive

Step-by-step explanation:

For even-index roots, which may be either positive or negative, the positive root is called the principal root.

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Joe is using the function E= 1.89x + 2.89y to minimize his expenses when selling

stepan [7]

Answer:

$(d)\ \$13.34$

Step-by-step explanation:

Given

$E = 1.89x + 2.89y$ -- Objective function

Constraints:

$2x + y > 10$

$x + 2y > 8$

$x,y>0$

Required

Minimum value of E

To do this, we apply graphical method

See attachment for plots of $2x + y > 10$ and $x + 2y > 8$

From the attached plot, the point that satisfy $x,y>0$ is:

$(x,y) = (4,2)$

So, we have:

$E = 1.89x + 2.89y$

This gives:

$E =1.89 * 4 + 2.89 * 2$

$E =7.56 + 5.78$

$E =13.34$

7 0

3 years ago

Find the length of the third side to the nearest tenth. 5 1

adelina 88 [10]

Answer:

square root of 26 (sorry couldn't get the symbol)

Step-by-step explanation:

C^2 = A^2 + B^2 (Pythagoras Theorem)

C^2 = 5^2 + 1^2

C^2 = 26

take square root of both sides

C =

$\sqrt{26}$

3 0

3 years ago

Which of the following would indicate the possible presence of multicollinearity in a regression analysis? a. A significant p-va

Iteru [2.4K]

Answer:

The answer is B - A high correlation between two or more independent variables.

Step-by-step explanation:

There are many factors that shows the possible presence of multicollinearity in a regression analysis. Multicollinearity occurs when independent variables in a regresssion model are correlated; the independent variables as their names implies is to be fully independent (on their own).

Based on the options; multicollinearity occurs when there is a high correlation between two or more independent variables.

6 0

3 years ago

Juliana wants to remodel her bathroom. Materials will cost $500 and the contractor charges $40 per hour. The equation y=40x+500

svet-max [94.6K]

what are you trying to find or how long did the worker work

3 0

3 years ago

What does it mean to find the inverse of a function

goldenfox [79]

In mathematics, an inverse function (or anti-function) is a function that "reverses" another function: if the function f applied to an input x gives a result of y, then applying its inverse function g to y gives the result x, and vice versa, i.e., f(x) = y if and only if g(y) = x. Courtesy to Wikipedia

5 0

3 years ago