When 40% of a number is added to the number the result is 210 what is the number

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?