Tell whether the two rates form a proportion. 440 calories in 4 servings; 300 calories in 3 servings. Yes or No

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.