Prove by set identities method that AUB' = B'

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

10% of 1,900,000. show me how you got the answer

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30