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antoniya [11.8K]
4 years ago
15

Place the following decimals in order from least to greatest by dragging and dropping them in the correct

Mathematics
1 answer:
slega [8]4 years ago
5 0

Answer:

Least to Greatest

3.07, 3.078, 3.7, 3.71

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12 - x = 20 - 5x<br> I don't know how to solve this, please explain
jeyben [28]
12 - x = 20 - 5x

You see that -x and -5x both have an 'x' variable? This means they are 'like' terms. To get -x to the other side, we must add (if like terms are on opposite sides, do the opposite of what the sign says, e.g. - will be +)

12 = 20 - 4x

Now move 20 to the other side. Remember, do the opposite! Since 20 is positive, we must minus 20 to the other side.

-8 = -4x

To get x by itself, you will need to get rid of the coefficient of -4. -4x basically means -4 times x, so the opposite of that would be divide! Divide by -4

2 = x (Since both sides have a negative, they cancel out to give a positive)
x = 2
8 0
3 years ago
Pure acid is to be added to a 10% acid solution to obtain 117 L of a 20% acid solution. What amounts of each should be used?
creativ13 [48]

Answer:

A typical mixture equation

:

x + .10(54-x) = .20(54)

x + 5.4 - .10x = 10.8

x - .1x = 10.8 - 5.4

.9x = 5.4

x = 5.4%2F.9

x = 6 L of pure acid to be combined with: 54-6 = 48 L of 10% solution

Step-by-step explanation:

does this help?

8 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
Contact [7]

1) (3.8 * 10^3) * (9.4 * 10^-5) = 0.3572 = 3.6 * 10^-1

2) (4.2 * 10^7) * (7.4 * 10^-2) = 3.1 * 10^6

3) (8.6 * 10^-6) * (7.1 * 10^9) / (4.1 * 10^ -2) * ( 2.8 * 10 ^-7) = 5.3 * 10^-6

4) 4.2 * 10^-1

Sorry for not putting my work for number 4. Hope this helps!

3 0
2 years ago
Just please answer ASAP thank
anzhelika [568]

Answer:

Each muffin= 1.5; Each quart of milk= 3

Step-by-step explanation:

Let m represent muffins and q quarts of milk, so

8m+2q=18

3m+1q=7.50

*solve*

3m+1q=7.5

    -1q    -1q

3m=-1q+7.5

/3     /3   /3

m=-1/3q+2.5

*replace for m*

8(-1/3q+2.5)+2q=18

-2 2/3q+20+2q=18

-2/3q+20=18

         -20 -20

-2/3q=-2

/-2/3  /-2/3

q=3

*replace to find m*

3m+1(3)=7.50

3m+3=7.5

      -3  -3

3m=4.5

/3     /3

m=1.5

*replace to verify*

8m+2q=18

8(1.5)+2(3)=18

12+6=18

18=18

3m+1q=7.50

3(1.5)+1(3)=7.5

4.5+3=7.5

7.5=7.5

8 0
2 years ago
What is the answer to this
fgiga [73]

Answer:

Step-by-step explanation:

7 0
3 years ago
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