7. let a be a matrix with n columns(number of unknowns). state and prove the dimension theorem for matrices. this is also known as the rank-nullity theorem

At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january. what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed. use 3.14 for π .

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).