Ariana answered 36 questions correctly on her multiple choice science final and earned a grade of 45%. How many total questions were on the final exam?

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?