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victus00 [196]
3 years ago
15

Please help asap !!!!!! what vaule of x makes the equation true 3(x-4)=15

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

3(x-4) = 15

Distribute the 3:

3x-12 = 15

Add 12 to both sides:

3x = 27

Divide both sides by 3:

X = 9

The answer is D. 9

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cluponka [151]
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Explaination: hope it helps
6 0
3 years ago
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On average the number of electric guitars sold in New York each year is 88,438, which is seven times the average number of elect
Taya2010 [7]

Answer:

South Dakota sells 12634 electric guitars p/yr.

Step-by-step explanation:

All you have to do is divide 88,438 by 7 because New York sells 7 times more. Divide that by 7 and you get 12,634

In Conclusion, your answer is that South Dakota sells 12634 electric guitars p/yr (per year) on average.

8 0
3 years ago
Could a set of three vectors in ℝ^4 span all ℝ^4? Explain. What about n vectors in ℝ^m when n is less than m?
Elena-2011 [213]

Answer:

Check the ecplanation

Step-by-step explanation:

A set of three vectors in R^{4} represents a matrix of 3 column vectors, and each vector containing 4 entries (that is, a matrix of 4 rows, and 3 columns).

Let A be that 4x 3 matrix. The columns of A span R^{m}. if and only if A has a pivot position in each row. So, there are at most 3 pivot positions in the matrix A, but the number of rows is 4, therefore, there exist at least one row not having a pivot position. If A does not have a pivot position in at least one row, then the columns of A do not span R^{4}. It implies that the set of 3 vectors of A does not span all of R^{4}.

In general, the set of n vectors in R^{m} represents a matrix of in rows, and n columns (an in x matrix). So, there are at most n pivot positions in the matrix A, but n is less than the number of rows. In therefore, there exist at least one row that does not contain a pivot position.

And, hence the set of n vectors of A does not span all of R^{m}. for n < m

8 0
3 years ago
Determine the value of x if (211) base x = 152 base 8
tekilochka [14]
It's the same as x^211 = 8^152

Simplify that equation.  Find the 211th root of (8^152), and that is what x equals.  If I remember logs correctly...
8 0
3 years ago
Ln a+3 + ln a-3 = ln 16
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7 0
3 years ago
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