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3 years ago

What’s the awnser to this mathematics equation

Mathematics

2 answers:

Anestetic [448]3 years ago

6 0

Answer:

Half of 9

So 4.5

exis [7]3 years ago

3 0

2x = 9

2x/2 = 9/2 (divide by 2 on both sides)

x = 4.5

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The following estimated regression equation was developed for a model involving two independent variables.

Alik [6]

Answer:

(a): y increases on average by 8.63/unit of x1 in the first equation and increases on average by 9.01/unit of x1 in the second

(b): Yes

Step-by-step explanation:

Given

$\wedge y = 40.7 + 8.63x_1 +2.71x_1$

$\wedge y = 42.0 + 9.01x_1$

Solving (a): An interpretation of x1 coefficient

We have the coefficients of x1 to be 8.63 and 9.01

Literally, the coefficient represents the average change of y-variable per unit increase of the dependent variable

Since the coefficients of x1 in both equations are positive, then that represents an increment on the y variable.

So, the interpretation is:

y increases on average by 8.63/unit of x1 in the first equation and increases on average by 9.01/unit of x1 in the second

Solving (b): Multicollinearity

This could be the cause because x1 and x2 are related and as a result, x2 could take a part of the coefficient of x2

7 0

3 years ago

Tony invested $5,500 in a four-year CD that paid 4.8% interest, but later needed to withdraw $475 early. If the CD’s penalty for

OleMash [197]

Given:
principal: 5,500
term: 4 years
interest rate: 4.8% per annum
early wdl of 475

penalty is the 3 months interest of the amount withdrawn.

Interest = 475 * 4.8% * 3/12
Interest = 475 * 1.2%
interest = 5.7 is the amount of the penalty

7 0

3 years ago

Determine coefficients a and b such that p(x)=x2 ax b satisfies p(1)=5 and p′(1)=11.

Murrr4er [49]

$p(x)=x^2+ax+b$
$p'(x)=2x+a$

Given that $p'(1)=11$ , you have

$p'(1)=2+a=11\implies a=9$

and given that $p(1)=5$ , you have

$p(1)=1+9+b=5\implies b=-5$

So you get

$p(x)=x^2+9x-5$

4 0

3 years ago

precipitation for the month of march was 2 3/4 inches less than average. in april the precipiitation was 3 7/8 inches less tha a

SVEN [57.7K]

Answer:6 5/8

Step-by-step explanation:

If we know that both are below average we can add them together to get the below average awnser for the 2 months.

5 0

3 years ago

Plssss help 20 points plssa<br> If K Mis the perpendicular bisector of JL, find x.<br> Plsss

Viefleur [7K]

Answer:

x= 7

Step-by-step explanation:

4x+9 =11x-61

9 = 7x - 61

70 = 7x

x = 7

8 0

3 years ago