Which one doesn't belong?
1. 5+7=7 +5
2. 5.7=7.5
3. 2= 7 - 5
4. 5-7= 7-5

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Find the percent error of the measurement 4 cm

If cos(θ)=2853 with θin q iv, what is sin(θ)?