Im bck i had to take a shower but anyways free points

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

Simplify the expression 10/11(22z) + (a+5) -1

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9