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Agata [3.3K]
3 years ago
15

I am really confused and need help.

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
4 0

Answer:

The 3rd, 4th, and 6th are correct but I'm not sure if the second would be correct as well.

Step-by-step explanation:

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solve using a system of equations. a pharmacist wants to mix two solutions to obtain 350 cc of a solution that has a 14% concent
Pavlova-9 [17]

Answer:

105 cc of 7% solution

245 cc of 17% solution

Step-by-step explanation:

If x = volume of 7% solution, and y = volume of 17% solution, then:

x + y = 350

0.07x + 0.17y = 0.14(350)

Solve with substitution:

0.07x + 0.17(350 − x) = 0.14(350)

0.07x + 59.5 − 0.17x = 49

10.5 = 0.10x

x = 105

y = 245

7 0
3 years ago
What is the answer and work to this problem. <br> 4x+2y=14<br> 2x+y=7
Nimfa-mama [501]

The given system of equation has no solution.

<u>Step-by-step explanation</u>:

<u><em>step 1</em></u><em> :</em>

The given equations are 4x + 2y = 14 and 2x + y = 7.

<u><em>step 2</em></u><em> :</em>

Let 4x + 2y = 14 be the first equation.

Let 2x + y = 7 be the second equation.

The solution (x,y) can be determined by solving the two equations, if only the given two equations are different.

<u><em>step 3</em></u><em> :</em>

In first equation taking 2 out as a common factor on both sides, the equation becomes:

2 (2x + y) = 2 (7)

So, the first equation resembles the second one.

<u><em>step 4</em></u><em> :</em>

Since both the equations are similar, they cannot be solved to get a solution. Therefore, the system of equation has no solution which is also known as inconsistent.

5 0
4 years ago
3.64 + 3/5 tell me the answer plz
kifflom [539]

Answer:

\huge\boxed{4.24}

Step-by-step explanation:

=> \sf 3.64+\frac{3}{5}                    [\sf \frac{3}{5} = 0.6]

=> 3.64 + 0.6

=> 4.24

Hope this helped!

~AnonymousHelper1807

6 0
3 years ago
Which of the following inequalities matches the graph. x&gt;-3 x&lt;-3 y&gt;-3 y&lt;-3
kvv77 [185]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
let m angle A = 40 degrees. If angle B is a complement of angle A and angle C is a supplement of angle B, find these measures
FinnZ [79.3K]
A= 40 B=50 C=130
.............
7 0
3 years ago
Read 2 more answers
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