In a bag there are pink buttons, yellow buttons and blue buttons. There are five times as many pink buttons as yellow buttons. number of yellow buttons : number of blue buttons = 4:7 One button is selected at random. Work out the probability that the button is either pink or blue. Give your answer as a fraction in its simplest form.​

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

After college gerald wants to take a graduation trip to china. he wants to save $4,000 for his trip in four years. about how much does gerald have to save each month if his savings earns 7% interest compounded monthly?

Michele wanted to measure the height of her school’s flagpole. she placed a mirror on the ground 48 feet from a flagpole, then walked backwards until she was able to see the top of the pole in the mirror. her eyes were 5 feet above the ground and she was 12 feet from the mirror. using similar triangles, find the height of the flagpole to the nearest hundredth of a foot.