Mathematics, 25.01.2021 21:00 lizzy6629

If the concentration of mercury in a water supply changes from 65 ppm to 7 ppm in a ten-year period, what is the percentage change of the mercury concentration? (with explanation pls)

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 20.06.2019 18:04, cyndiann2002

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Answers: 2

continue

Mathematics, 21.06.2019 22:30, yettionajetti

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

Answers: 1

continue

Mathematics, 22.06.2019 00:00, mikisims

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Answers: 1

continue

Mathematics, 22.06.2019 01:10, ahankaranth

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?

Answers: 2

continue

You know the right answer?

If the concentration of mercury in a water supply changes from 65 ppm to 7 ppm in a ten-year period,...