In an art classroom there are two large tables demonstrating artwork. one table has 5 fruit drawings, 3 flowers drawings and 9 bird drawing. the other table has 7 face drawings, 12 mountain drawings and 4 waterfall drawings. if the teachers selects a drawing from one of the table to post as the drawing of the week what is the probability that the teacher will select a flower or mountain drawing? express your probability answer as a fraction, decimal and percent. help pli

Adding and subtracting matricesfind the value of each variable. x = and y = would

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0