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nirvana33 [79]
2 years ago
15

How many solutions does this system have? -6x + 18y = 264. - 12x - 36y = 130 . PLS HELP​ ill give brainliest

Mathematics
1 answer:
Alchen [17]2 years ago
8 0

Answer:

x=−44 + 3y

x=-\frac{65}{6} - 3y

Step-by-step explanation:

plz mark brainliest

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3 years ago
Please help me please !!!!!!!
LekaFEV [45]

Answer:

b

Step-by-step explanation:

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Which of the following equations is the result of completing the square on x^2 - 6x - 9 = 0?
lina2011 [118]
X² - 6x - 9 = 0
x² - 3x - 3x - 9 = 0
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In short, Your Answer would be Option A

Hope this helps!
6 0
3 years ago
Read 2 more answers
In order to determine an interval for the mean of a population with unknown standard deviation, a sample of 24 items is selected
nikitadnepr [17]

If the sample size of population is 24 then the number of degrees of freedom for reading the t  value is 23 which is option c.

Given sample size of 24,mean 23.

We have to determine the number of degrees of freedom which will be used to find the critical values of t.

Degree of freedom is the number of values in the final calculation of a statistic that are free to vary means that can change their values in the formula of calculating t.

t=(X-μ)/s/\sqrt{n}

where X is sample mean ,

μ is hypothsised population mean

s is sample standard deviation

n is sample size.

Degree of freedom=n-1

In this question n is 24 so the degree of freedom =24-1=23.

Hence the number of degrees of freedom for reading the t value is 23.

Learn more about degree of freedom at brainly.com/question/17305237

#SPJ4

5 0
2 years ago
I really need help with this
Ivenika [448]

A line is infinitely long but is only one-dimensional.

A solid is three-dimensional but not infinite.

Geometric space is infinite but is three-dimensional.

So, that leaves a plane, which is two-dimensional and infinitely large. The answer is A plane!

5 0
3 years ago
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