The Occupational Safety and Health Act of 1970 established OSHA, a national public health agency dedicated to: A) Workers' compensation
B) Salon pollution
C) Workplace safety
is everyone's
D) Food safety

Certain gases in air are important natural resources that are used in welding. two of these gases are a. oxygen and argon b. hydrogen and fluorine c. chlorine and sulfur dioxide d. nitrogen and carbon dioxide

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.

What is the marginal cost of producing a fifth soccer net? $1.00 $1.50 $2.00 $2.50 the chart says soccer nets per day 1 2 3 4 5 total cost $7 $9 $10 $11 $13 marginal cost $7 $2 $1 ? ?