A 45-foot ladder makes an angle of measure 55 degrees with the ground. How high up the wall does the
ladder reach?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)