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3 years ago

1 5 y + 8 − 4 5 = 9 10 y − 9 20

Mathematics

1 answer:

emmainna [20.7K]3 years ago

7 0

Answer:

y ≈ .98 i hope this helps :)

Step-by-step explanation:

given equation 15y + 8 - 45 = 910y - 920

simplify the equation 15y - 37 = 910y - 920

subtract 15y from both sides -37 = 895y - 920

add 920 to both sides 883 = 895y

divide both sides by 895 .98 ≈ y

y ≈ .98

0.98659217877

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Answer:

Taater is a good friend of mine.

Step-by-step explanation:

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3 years ago

Evaluate this expression 1/3 x 4 x 9 x 1/2

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Step-by-step explanation:

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$73,000

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3 years ago

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.

We are to check whether the above statement is correct or not.

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

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

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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.

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3 years ago