Find the valve of x if the following three numbers are in Gp. a. x+9,x+3, x
b. x-5, x+1, x+5
c. 2x,2x+3, 2x+9
d. 3x, x+6, 3x+8

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.