The difference between the solutions to the equation x^2=a is 30. What is a?

Volume of a pyramid 10 feet by 10 feet base and height of 8.5 feet

From the top of a 150-ft building, Polly observes Tony driving a car toward her. If the angle of depression to the car changes from 18 deg to 42 deg during the observation, how far does the car travel?

How much hours is it from 7:45AM-4:00PM?

5. The distance from the shovel to the treasure chest is 60 yards and the distance from the treasure chest to the boat is 50 yards. How far is the boat from the shovel?

If two marbles are randomly selected from the bag without replacement, what is the probability that the first marble is blue?

What's the difference between 4.5 and - 3.5

Joe went to the store and bought six packs of pens for $1.79 each, five erasers for $.89 each and a pack of paper for $3.29. He had a coupon for 25% off and then had to pay 6% tax. What was the final cost of his purchase?

What number is a factor of 20 but not a multiple of 5

Given: 5 > x + 7. Choose the solution set. {XIXER, X>-2) {XIXER, X<-2) {XIXER, x> 2] . XIXER, X<2}

Is 0.2782 an integer?