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AfilCa [17]
4 years ago
13

3/5b-2+7b-12-2/5b+14 ​

Mathematics
1 answer:
stiv31 [10]4 years ago
4 0
The answer is 7 1/5 b

EXPLANATION:

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Answer: The answer is it would take Dan and Stan 1 hour if they work together, because 3-2=1, so make those hours and you have 1 hour.

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Find each sum or difference. Show your work. <br><br> a^2+5a-3-(2a^2-4a+3)<br><br> Plz help!
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( a² + 5a - 3 ) - ( 2a² - 4a + 3 )

Combine like-terms

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6 0
3 years ago
Which inequality is true?
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3 years ago
Joe is eating M&amp;Ms. He eats 3 at a time, since he's very organized, and eats them at the beginning of every minute. If his b
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5 0
3 years ago
Read 2 more answers
Using Cramer’s Rule, what is the value of x in the system of linear equations below?
MArishka [77]

We have to solve the system of equations by Cramer's rule.

The coefficient matrix is given by

D=\begin{bmatrix}3&4\\8 &-2\end{bmatrix}

Let us find the determinant of coefficient matrix.

|D|= -6-32=-38

For X-matrix

D_x=\begin{bmatrix}15&4\\40 & -2\end{bmatrix}

Now, we find its determinant

|D_x|=-30-160=-190

For Y-matrix

D_x=\begin{bmatrix}15&3\\ 40&8\end{bmatrix}

Now, we find its determinant

|D_y|=120-120=0

Therefore, the value for x is given by

x=\frac{D_x}{D}\\\\x=\frac{-190}{-38}\\\\x=5

The value for x is 5.

8 0
3 years ago
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