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Harlamova29_29 [7]
2 years ago
10

3kg of salt is add to 15kg of pure water. What percentage of the mixture is salt?

Mathematics
1 answer:
Alik [6]2 years ago
5 0
16.6667% (16 2/3)

15 + 3 = 18
3/18 = 16.6667
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Y = 5x - 10<br> Can you solve for x
tensa zangetsu [6.8K]

Answer:

x = \frac{1}{5}y + 2     or       x = \frac{y+10}{5}     (Not sure which one is preferred in your case)

Step-by-step explanation:

<u>Key skills needed: Evaluating expressions</u>

1) We are given: y = 5x-10

2) To solve for the x variable, we want to leave the term with "x" by itself.

This means we add 10 to both sides

--> y + 10 = 5x (Since -10 and +10 cancel out to make 0 or nothing)

3) Then we divide by 5 on both sides to get "x" completely by itself.

-----> \frac{y+10}{5} = x

4) You can keep it as is so --> x = \frac{y + 10}{5}

or you can divide "y" by 5 and "10" by 5 and get --> x = \frac{1}{5} y + 2

(I am not sure which form is preferred one is preferred as the teacher matters)

<em>Hope you understood and have a nice day!!</em>

6 0
2 years ago
Read 2 more answers
I need help please! I will mark you as a brainlest and give out 30 points!
klio [65]
Answer:
1entire group
2part
3particular condition
4random and large enough
5range of the middle half
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7
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9 average
10middle of a sorted list
11which appears more often
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Step-by-step explanation:
Im not sure about the rest
3 0
2 years ago
Witch set of orderd pairs contains only points that are on the graph of the function y=12-3x
anygoal [31]
You can try then by plotting the points in. 
The answer is C

Make sure by plotting in the points, lets take (-5,27)
y = 12 -3(-5)
y = 12 + 15
y = 27
27 = 27
This is correct 

Lets try (-1,15)
y = 12 -3(-1)
y = 12 + 3 
y = 15 
15 = 15
This is correct 

Lets try (8,-12)
y = 12 -3(8)
y = 12 - 24 
y = -12 
-12 = -12
This is correct too. 

The correct ordered pairs are <span>C(-5,27),(-1,15),(8,-12)</span>
5 0
3 years ago
A basketball player guesses her team will score 57 points during the game. The player's team actually scores 63 points. What is
Sergeeva-Olga [200]

I might be wrong, but i believe the answer is 9.5

6 0
2 years ago
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Which graph best represents the line y= -1/5x+2
vodomira [7]

Answer:

B

Step-by-step explanation:

Line crosses y-axis at 2.

Slope = \frac{-1}{5}

For each 1 square the line rises/falls it moves to the right/left 5 squares.

Negative slope lines are downhill left to right.  

8 0
3 years ago
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