Use factoring to write an equivalent expression 15 x +9

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?