Giorgio has determined that 19% of the thousands of photos of rainbows posted to a website show double rainbows. Let R be the number of rainbow photos Giorgio looks at until a photo shows a double
rainbow. Assume that the images in each photo are independent.
Find the mean and standard deviation of R.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Revirite the formula to determine the area covered by one can of paint. alyssa and her father are going to paint the house this summer. they know they'll need 6 cans of paint. enter the correct answer. 000 done a formula that describes this scenario is (licierali 000 oo 6 w w = the total area of the walls p = area covered by a can of paint

If the scale factor between two circles is 2x/5y what is the ratio of their areas?