Given ∆ABC, m∠A = 120°,b = 13cm ,c = 15cm . Find the length of side A. Draw the triangle and label it. Show all work to find the missing side length. Use appropriate units. Thank you in advance!!
You don't have to draw the triangle, but a small description would help a lot :0

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Solutions for 2x+7 less than or equal to 3x-5

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?