2x + 5y - 28
-2x - 5y = -18
Elimination...
Answers: 1
Mathematics, 21.06.2019 13:30
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).
Answers: 1
Mathematics, 21.06.2019 14:10
What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?
Answers: 2
Mathematics, 21.06.2019 16:30
You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:
Answers: 1
Mathematics, 21.06.2019 18:30
Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?
Answers: 2
Health, 20.10.2020 14:01
Computers and Technology, 20.10.2020 14:01
Mathematics, 20.10.2020 14:01
Mathematics, 20.10.2020 14:01
Biology, 20.10.2020 14:01
Computers and Technology, 20.10.2020 14:01
Spanish, 20.10.2020 14:01
History, 20.10.2020 14:01
History, 20.10.2020 14:01
Biology, 20.10.2020 14:01
Mathematics, 20.10.2020 14:01
Biology, 20.10.2020 14:01
Spanish, 20.10.2020 14:01