Has 4 glass ornaments: blue, orange, pink, and purple. how many ways can she hang them in a row so that the blue and pink ornaments are not next to each other?

What is the length of the unknown leg in the right triangle ?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

What does x = in this equation x+3+2x=x+5