In a school hostel, there is enough food for 30 days. after 10 days, 40 students left the hostel and 100 more students join the hostel. how long will the food last?

Find the solution of system of equation y= x-4 y=4x+2

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables