3 years ago

What's the answer to 5x-4+6<16

1 answer:

5 0

5x-4+6<16
Subtract 6 from both sides
5x-4<10
Add 4 to both sides
5x<14
Divide 5 on both sides so that the only thing remaining on the left side is the variable x.
Final Answer: 14/5 or 2 4/5 or 2.8 *All answers are equivalent to each other.

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B. $x^{2} +2x-8$

Step-by-step explanation:

Here the best method to solve is by substituting the end values of the set in each option , otherwise it will a time consuming problem.

Now substitute x=-4 in all the options

A. $x^{2} -2x-8$

16+8-8=16>0

so out of option A and C option C is correct.

B. $x^{2} +2x-8$

16-8-8=0 which means for the values of x>-4 $x^{2} +2x-8$ is less than 0

Now substitute x=2 in all the options

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B. $x^{2} +2x-8$

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