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Rzqust [24]
3 years ago
8

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is

20% salt and
Solution B is 80% salt. She wants to obtain 180 ounces of a mixture that is 30% salt. How many ounces of each solution should she use?
​

Mathematics
1 answer:
navik [9.2K]3 years ago
5 0
The answer is 150 oz of solution a and 30oz of solution b. I’m adding in the work please ask if you have any questions

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After drawing the line y = 2x − 1 and marking the point A = (−2, 7), Kendall is trying to decide which point on the line is clos
igor_vitrenko [27]

Answer:

Step-by-step explanation:

Having drawn the line, Kendall must verify that the point P belongs to the line y = 2x-1 and then calculate the distance between A-P  and verify if it is the closest to A or there is another one of the line

Having the point P(3,5) substitue x to verify y

y=2*(3)-1=6-1=5 (3,5)

Now if the angle formed by A and P is 90º it means that it is the closest point, otherwise that point must be found

d_{AP}=\sqrt{(y_{2}-y_{1})^{2}+(x_{2}-x_{1})^{2}}=\sqrt{(5-7)^{2}+(3-(-2}))^{2}}=\\\sqrt{(-2)^{2}+(5)^{2}}=\sqrt{29}

and we found the distance PQ and QA

; d_{PQ}=\sqrt{125}, d_{QA}=12

be the APQ triangle we must find <APQ through the cosine law (graph 2).

3 0
3 years ago
Please help I don’t understand
nikitadnepr [17]

Answer:

5 people

Step-by-step explanation:

For each people Ms Hernandez bring to the zoo, she will pay $15.50, so if she go alone, 1×15.50, if she go with one person, 2×15.50, with three 3×15.50, and keep growing this way. The price each person pay is constant and equal to 15.50, and what will determine the final price is the number of people. Also remember that she always will have to pay $ 10 on parking, so you can write an equation with this:

15.50x +10 = y, as x being the number of people and y being the final price.

She have $100, so this is the max she can spend. Two know the number of people she can bring to the zoo, put 100 in place of y and find the value of x:

15.50x + 10 = 100

15.50x = 100 - 10

15.50x = 90

x = 90/15.50

x = 5.8

But there's no way to bring 0.8 person, so the max she can bring are 5 people, including her

5 0
2 years ago
I NEED ANSWER ASAP !!!
aivan3 [116]

Answer:

5

Step-by-step explanation:

3+2x=5x

3=3x

x=1

PR=5

4 0
3 years ago
Three times a number plus 12 minus 5 times the same number is 22. What is the number?
sp2606 [1]
The number is 15
hope this helps

5 0
3 years ago
Read 2 more answers
Convert a fraction to simplest form
irakobra [83]

Answer:

Ok so I made up a fraction 7/5

!         The result can be shown in multiple forms.

Exact Form:

7/6

Decimal Form:

1.16

Mixed Number Form:

1 1/6

5 0
3 years ago
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