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mafiozo [28]
3 years ago
15

What is the value of r?

Mathematics
1 answer:
s2008m [1.1K]3 years ago
5 0

Answer:

Since opposite sides of parallelogram are equal therefore

9r-6=8r+3

r=9

EF=4r+19{opposite sides of parallelogram are equal}

=4×9+19

36+19

=55

Here is you answer.

Step-by-step explanation:

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John and Tim are looking at the equation the square root of the quantity of 3 times x minus 4 equals square root of x . John say
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The equation is 
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9x^2 - 24x + 16-x = x-x
9x^2 - 25x + 16 = 0

Now use the quadratic formula. See the attached image for those steps.

After using the quadratic formula the two possible solutions are x = 1 or x = 16/9

We need to check each possible solution to see if it is extraneous or not.

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

Checking x = 1

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3*1 - 4 = sqrt(1)
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So let's check it
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Checking x = 16/9

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This solution is considered non-extraneous. So Tim is also correct
----------------------------

They are both correct because there are two possible solutions. One of which is extraneous (x = 1) and the other is non-extraneous (the fraction x = 16/9)

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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