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storchak [24]
3 years ago
15

If 3x^2=4y=12 what is the value ofx^2y

Mathematics
2 answers:
daser333 [38]3 years ago
6 0
It would be 64 because x equals 2. Y=3
rewona [7]3 years ago
4 0
\bf 3x^2=4y=12\quad 
\begin{cases}
3x^2=4y\\
4y=12\\
-----\\
3x^2=12
\end{cases}
\begin{cases}
3x^2=12\\
x^2=\frac{12}{3}\\
x^2=4\\
x=\sqrt{4}\\
\boxed{x=2}
\end{cases}\quad 
\begin{cases}
4y=12\\
y=\frac{12}{4}\\
\boxed{y=3}
\end{cases}
\\\\\\
x^2y\implies (2)^2(3)\implies 4\cdot 3\implies 12
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Explain and answer please throughlly explain. I got 7 with a remainder of 3 halp. I think its .73 idk.
kipiarov [429]

Answer:

H) 0.75

Step-by-step explanation:

4.5 divided by 6 is 0.75

We don't use remainders in algebra for the most part.  We have to do regular division.  I'll try to show it here:

   

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3 years ago
At the yard sale,3\4 of items for sale were toys and 5\6 of the items for sale were books Were there more toys of books for sale
Vesnalui [34]

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5 0
3 years ago
A sample of 13 sheets of cardstock is randomly selected and the following thicknesses are measured in millimeters. Give a point
valina [46]
<h3>Answer:  0.061</h3>

===============================================

Explanation:

Add up the values to get

1.96+1.81+1.97+1.83+1.87+1.84+1.85+1.94+1.96+1.81+1.86+1.95+1.89= 24.54

Then divide over 13 (the number of values) to get 24.54/13 = 1.8876923 which is approximate.

So the mean is approximately 1.8876923

---------------------

Now make a spreadsheet as shown below

We have the first column as the x values, which are the original numbers your teacher provided. The second column is of the form (x-M)^2, where M is the mean we computed earlier. We subtract off the mean and square the result.

After we compute that column of (x-M)^2 values, we add them up to get what is shown in the highlighted yellow cell at the bottom of the column.

That sum is approximately 0.04403076924

Next, we divide that over n-1 = 13-1 = 12

0.04403076924 /12 = 0.00366923077

That is the sample variance. Apply the square root to this to get the sample standard deviation. This is the point estimate of the population standard deviation. As the name implies, it works for samples that estimate population parameters.

sqrt(0.00366923077) = 0.06057417576822

This rounds to 0.061 which is the final answer.

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2 years ago
30 points Someone help im very confused.
Alchen [17]

Answer:

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Step-by-step explanation:

5 0
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