A boy standing between two pillars of equal height observes the angle of a elevation of the top of pillars to be 30°. Approaching 15m towards any one
of the pillar, the angle of elevation is 45°. Find the height of the pillars and the distance between them ​

Ill mark the brainliest if you me with the these three questions 7,8,9

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

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?