An adult takes 400 mg of vitamin C. Each hour, the amount of vitamin C in the person's system decreases by about 29%. Estimated to the nearest hundredth, how many mg of vitamin C are left in the system after 6 hours?

Find the area of a trapezoid with bases 14 cm and 18 cm and height 10 cm. 160 cm2 140 cm2 180 cm2 126 cm2

Write the percent as a fraction or mixed number in simplest form. 0.8%

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −