What is the value of fraction 1 over 3x2 + 5.2y when x = 3 and y = 2?
12.4
13.4
14.4
16.4

B. 13.4

Step-by-step explanation:

We have the fraction, .

It is required to find the value of the fraction when x = 3 and y = 2.

So, on substituting these values, we get,

i.e.

i.e.

i.e.

So, the value of the fraction is 13.4

Hence, option B is correct.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

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