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goldenfox [79]
2 years ago
7

The chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to t

he 10% solution to get this concentration?
Mathematics
2 answers:
3241004551 [841]2 years ago
4 0
The answer is 400 mL
kow [346]2 years ago
4 0

Answer:

400 mL

The next answers are: 600 mL, and then 180 g

Step-by-step explanation:

these are the correct answers on ed-genuity, hope this helps! :)

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Put the following in slope intercept form<br><br> 4x - 3y = 15
Tcecarenko [31]

slope intercept form: y = mx + b

Note the equal sign. what you do to one side, you do to the other. First, subtract 4x from both sides

4x - 3y = 15

4x (-4x) - 3y = 15 (-4x)

-3y = -4x + 15

Next, divide -3 from both sides to isolate the y.

(-3y)/-3 = (-4x + 15)/-3

y = (4/3)x - 5

y = (4/3)x - 5 is your answer

hope this helps

4 0
3 years ago
Whats -2(x-3)=5(2x+3)
puteri [66]
-2(x - 3) = 5(2x + 3)

-2x + 6 = 10x + 15

6 = 10x + 15 + 2

6 = 12x + 15

6 - 15 = 12x

-9 = 12x

-9/12 = x

-3/4 = x     or in decimal form; -0.75

hope this helps, God bless!
8 0
2 years ago
Read 2 more answers
Please please please please please help me <br> i will give brainliest
alukav5142 [94]
2x^2 - 4 = 68
add 4 to both sides
2x^2 = 72
divide both sides by 2
x^2 = 36
find the square root of each sides
x = 6, -6

ANSWER: the positive value of x is 6
7 0
3 years ago
The Square sand pit in park lot has an area of 16 ft. There is a rope along one side of the pit. How long is the rope?
slavikrds [6]

Answer:

ydhhh

Step-by-step explanation:

1)tiff

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4 0
3 years ago
Determine the distance between point (x1, y1) and point (x2, y2), and assign the result to point distance. the calculation is: d
Ronch [10]

we are given two points as

(1.0, 2.0) and (1.0, 5.0)

so,

(x1, y1)= (1.0 , 2.0)

(x2, y2)= (1.0 , 5.0)

x1=1 , y1=2

x2=1 , y2=5

now, we can use distance formula

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

now, we can plug values

and we get

d=\sqrt{(1-1)^2+(5-2)^2}

d=\sqrt{(0)^2+(3)^2}

d=\sqrt{(3)^2}

d=3

so, distance between points is 3...........Answer

5 0
3 years ago
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