Mathematics, 29.12.2021 09:40 galfaro19
Solving a percent mixture problem using a system of linear equations.
A scientist mixes water (containing no salt) with a solution that contains 40% salt. She wants to obtain 240 ounces of a mixture that is 30% salt. How many ounces of water and how many ounces of the 40% salt solution should she use?
Water: ? Ounces
Salt Solution: ? Ounces
Answers: 3
Mathematics, 21.06.2019 13:00
You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?
Answers: 1
Mathematics, 21.06.2019 17:20
Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?
Answers: 2
Mathematics, 21.06.2019 18:40
What is the value of the expression below? 148+(-6)| + |β 35= 7|
Answers: 2
Solving a percent mixture problem using a system of linear equations.
A scientist mixes water (con...
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