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kipiarov [429]
3 years ago
9

Simplifying algebraic expressions -8-4m-4m-8+ -3+10m

Mathematics
1 answer:
marissa [1.9K]3 years ago
6 0

-2m-9 is the simplified expression

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How many permutations exist of the letters a, b, c, d taken two at a time?
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The number of permutations of the 4 different letters, taken two at a time, is given by:
4P2=\frac{4!}{2!}=12
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Which of the following lines will have a negative slope? Select all that apply
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1, 5

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-16/4=-4

10/5=2

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The negative ones are your answer.

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2 Increase $45 by 10% =
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i think 2.7

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if not have a great life

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If the perimeter of a square field measures 440 yards , what is the length of each side ?
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Is the following statement correct? Explain.
Maksim231197 [3]

Answer:  The answer is NO.


Step-by-step explanation: The given statement is -

If the graph of two equations are coincident lines, then that system of equations will have no solution.

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Any two equations having graphs as coincident lines are of the form -

ax+by=c,\\\\dax+dby=dc,\\\\\textup{where}~~d\neq 1.

If we take d = 1, then both the equations will be same.

Now, subtracting the second equation from first, we have

a(1-d)x+b(1-d)y=c(1-d)\\\\\Rightarrow ax+by=c,~\textup{since}~d\neq 1,~\textup{so}~1-d\neq 0.

Again, we will get the first equation, which is linear in two unknown variables. So, the system will have infinite number of solutions, which consists of the points lying on the line.

For example, see the attached figure, the graphs of following two equations is drawn and they are coincident. Also, the result is again the same straight line which has infinite number of points on it. These points makes the solution for the following system.

2x+5y=10,\\\\6x+15y=30.

Thus, the given statement is not correct.


4 0
3 years ago
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