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lisabon 2012 [21]
4 years ago
7

Which of the following steps would you perform to the system of equations below so that the equations have opposite y-coefficien

ts?
4x+2y=4
12x-y=26

A. Multiply both sides of the top equation by 2
B. Divide both sides of the bottom equation by 3
C. Divide both sides of the top equation by 3
D. Multiply both sides of the bottom equation by 2
Mathematics
2 answers:
denis23 [38]4 years ago
3 0
I think B not 100%shure ,you could prob go ask this on yahoo and get a bit more help ;) sorry I couldent help more
Vika [28.1K]4 years ago
3 0
The answer is D. you would multiply bottom equation by 2 so that it would be -2Y vs +2Y :)
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Paladinen [302]
96 - 15.2 = 80.8
80.8 / 10 = 8.08

He was using up 8.08 pounds of sugar daily for his baking, so the answer is the second option.
6 0
3 years ago
What is the 5th equivalent fraction to <br> 1<br> 8<br> ?
valkas [14]

Answer:

5/40

Step-by-step explanation:

1/8 = 2/16 = 3/24 = 4/32 = 5/40

you just need to add 1 to the numerator(number on top) and 8 to the denominator(number at bottom). :)

7 0
3 years ago
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Vesna [10]
You need to use basic algebra for this.
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3 0
3 years ago
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The discount price of a hat is $18. What is the regular price?
Mumz [18]

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6 0
3 years ago
Professor wonders whether a student's homework average (X) could be used to predict their final grade in the course (Y) . She ca
Anna11 [10]

Answer:

The dependent variable is the final grade in the course and is the vriable of interest on this case.

H0: \beta_1 = 0

H1: \beta_1 \neq 0

And if we reject the null hypothesis we can conclude that we have a significant relationship between the two variables analyzed.

Step-by-step explanation:

On this case w ehave the following linear model:

Y= 21.839 +0.724 X

Where Y represent the final grade in the course and X the student's homework average. For this linear model the slope is given by \beta_1 = 0.724 and the intercept is \beta_0 = 21.839

Which is the dependent variable, and why?

The dependent variable is the final grade in the course and is the vriable of interest on this case.

Based on the material taught in this course, which of the following is the most appropriate alternative hypothesis to use for resolving this question?

Since we conduct a regression the hypothesis of interest are:

H0: \beta_1 = 0

H1: \beta_1 \neq 0

And if we reject the null hypothesis we can conclude that we have a significant relationship between the two variables analyzed.

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