Une boite contient 150 bonbons au chocolat noir et 120 au chocolat blanc. A. Donner sous forme dune fraction irreductible la proportion de bonbons au chocolat noire dans la boite.

b. Hugo mange 3 bonbons au chocolat noir et 3 bonbons au chocolat blanc.. A-t-on encore la meme proportion de bonbons au chocolat noir dans la boite ?

Ineed i been stuck on this question since yesterday

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations