There are 35 red marbles, 8 blue marbles, and 7 green marbles in a bag. what is the theoretical probability of randomly drawing either a blue marble or a green marble?

there are 35 red marbles, 8 blue marbles, and 7 green marbles in a bag.
what is the theoretical probability of randomly drawing a red marble and then a green marble?

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.