Answer:
15.
16. 10 ml of 20% saline and 40 ml of 10% saline
Step-by-step explanation:
A chemist takes x ml of 20% saline and y ml of 10% saline. In total, he takes
x + y ml that is 50 ml, so
There are ml of salt in x ml of 20% saline and ml of salt in 10% saline. There are ml of salt in 50 ml of 12% saline. Thus,
15. We get the system of two equations:
16. Solve this system. From the first equation:
Substitute it into the second equation:
Concluding, the equations that do not accurately represent the data in the scatter plot are B, C, and D.
<h3>
</h3><h3>
Which equations do not accurately represent the data in the scatter plot?</h3>
By looking at the scatter plot, we can see that as we read from left to right, the number of shoes sold (y variable) decreases.
Then the linear fit must have a negative slope, from that, we can discard options B and C.
Now, we also can see that the line starts almost at y = 70.
If you look at the option D, you can see that the constant term of that line is -70, so we can also discard that option.
Concluding, the equations that do not accurately represent the data in the scatter plot are B, C, and D.
If you want to learn more about scatter plots:
brainly.com/question/6592115
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The awnser is 145
(50 divided 2) = 25
5 to the power of 3= 125
-5
=145
Divide 754 by 13 and you get 58
Now multiply by 9 and you get 522 miles.