Sheldon practiced the piano 2
-
3
of an hour on Monday,
1
-
6
of an hour on Tuesday, and
3
-
4
of an hour on Thursday. How many hours did Sheldon practice the piano?
ANSWER GOOD AND YOU GET A COOKIE AND BONUS POINTS M8

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).

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?