Which properties are true for all rhombuses? (YOU CAN PICK MUTIPLE) A. four congruent sides
B. four right angles
C. exactly one pair of parallel sides
D. opposite sides parallel
E. opposite sides congruent

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days

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