Solve this system of equations by using the elimination method. 4x+2y=-6
-3x-2y=7

If you answer this and if you don't mind could you please explain how to solve these?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

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?

(30 points). the population of a city is 45,000 and decreases 2% each year. if the trend continues, what will the population be aer 15 yrs