Mathematics, 07.10.2021 18:50, lolirdc
#18: A beauty supply company received an order from a salon for 42 liters of 28% hydrogen
peroxide. The company is out of 28% peroxide, but they can make some by mixing 20%
hydrogen peroxide and 30% hydrogen peroxide, both of which they have. How much of each
substance should be mixed together to fill the order?
Answers: 3
Mathematics, 21.06.2019 13:00, miathegreat
The sketch shows two parallel lines cut by a transversal. angle 2 2 is 36° 36 ° . what is the measure of angle 8 8 ?
Answers: 1
Mathematics, 21.06.2019 19:30, gsVKJCGAISGF46661
Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20
Answers: 2
Mathematics, 21.06.2019 20:50, brea2006
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
Mathematics, 21.06.2019 21:30, erikacastro259
Select all the correct locations on the table. consider the following expression. 76.493 select "equivalent" or "not equivalent" to indicate whether the expression above is equivalent or not equivalent to the values or expressions in the last column equivalent not equivalent 343 equivalent not equivalent 49 78.498 78.498 75.493 equivalent not equivalent 75.7 equivalent not equivalent
Answers: 3
#18: A beauty supply company received an order from a salon for 42 liters of 28% hydrogen
peroxide...
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