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Margaret [11]
3 years ago
13

What is 509 divided by 40 in pemdas form xD sorry if it hard

Mathematics
2 answers:
Ber [7]3 years ago
8 0

oof thats too ez kid.

12.5

marta [7]3 years ago
7 0
509 divided by 40 is 12.7

Hope i helped 
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We need to differentiate this with respect to x to see if we can find an expression for the derivative of y at various points.  That will be the slope of the tangent to the curve.  Then we want to see where that derivative might be infinite -- i.e., where the tangent is vertical.

 

It's not written as a function, but it can still be differentiated using the chain rule:

 

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Let's plug that in for y in the original equation to find points where that's the case.

 

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So we have two x values where the tangent might be vertical.  Let's plug them into the equation and see what the y values are.  First x = 2...

 

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So at the point (2, -1) the tangent is vertical.

 

Now try x = -2...

 

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So at the point (-2, 1) the tangent is vertical.

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