Question

For which values of x is A U B = Ø

Answer 1

Answer:hi, the answer would be (a) or 2<x<3 hope this helps :)

Step-by-step explanation: i just took the test got em all correct

Answer 2

The first: 2 < x < 3

Explanation:

`3x+4\geq13\\\\3x\geq9\\\\x\geq3\\\\A=\big<3\,,\ \infty)`
`\frac12x+3\leq4\\\\\frac12x\leq1\\\\x\leq2\\\\B=(-\infty\,,\ 2\big>`

`A\cup B\\ot=\varnothing\quad for\ all\ x\in(-\infty\,, 2\big>\cup\big<3\,,\ \infty)`

so:

`A\cup B=\varnothing\quad for\ x\in(\,2\,,\ 3\,)`