In a class of 20 students, 7 were wearing a white shirt. in the same class, 14 students had on blue jeans. eyewitnesses all stated that the suspect was in the class, and wearing both a white shirt and blue jeans. according to the laws of probability, what percent of the class could be the suspect?
a. 15% b. 25% c. 35% d. 45%
how to solve this problem?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red