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Daniel [21]
3 years ago
10

I need help, please, I really need a help, please.

Mathematics
1 answer:
Vanyuwa [196]3 years ago
6 0
The Answer Would Be CF
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Solve the equation.
lawyer [7]

Answer:

  • x=12
  • x=9

Step-by-step explanation:

1) Eliminate parentheses:

  0.1x +18.8 = -4 +2x

  22.8 = 1.9x . . . . . . . . . add 4 - 0.1x

  12 = x . . . . . . . . . . . . . divide by 1.9

__

2) Eliminate parentheses:

  -16 +4x = 0.8x +12.8

  3.2x = 28.8 . . . . . . . . add 16 - 0.8x

  x = 9 . . . . . . . . . . . . . .divide by 3.2

_____

<em>Comments on the solutions</em>

The expression we add in each case eliminates the constant on one side of the equation and the variable term on the other side. That leaves an equation of the form ...

  variable term = constant

We choose to eliminate the smaller variable term (the one with the coefficient farthest to the left on the number line). Then the constant we eliminate is the on on the other side of the equation. This choice ensures that the remaining variable term has a positive coefficient, tending to reduce errors.

__

You can work these problems by methods that eliminate fractions. Here, the fractions are decimal values, so are not that difficult to deal with. In any event, it is good to be able to work with numbers in any form: fractions, decimals, integers. It can save some steps.

7 0
3 years ago
The rate of change is<br><br> A. -4<br> B. -1<br> C. 1<br> D. 4
babymother [125]
The rate of change is 4 so your answer would be D. 4
3 0
3 years ago
Write a word problem for this equation.<br> 10 lb - w = 3 lb
Luden [163]

Answer:

10 people buy slushies and the price of each is lb. They have already spent w on food. How much did they spend on slushies.

Step-by-step explanation:

7 0
3 years ago
Please helpp with my math hw I’ll give brainlest
-Dominant- [34]

Answer:

20 percent

40 percent

20 percent

20(.008) percent

Step-by-step explanation:

6) 54 - 45 = 9

45 / 9 = 5

100 / 5 = 20

20 percent

7) 60 - 36 = 24

60 / 24 = 2.5

100 / 2.5 = 40

40 percent

8) 30 - 24 = 6

30 / 6 = 5

100 / 5 = 20

20 percent

9) 24.99 - 19.99 = 5

24.99 / 5 = 4.998

100 / 4.998 approx. = 20.008

20.008 percent (or rounded 20 percent)

4 0
2 years ago
What are the dimensions of the rectangle shown below? Remember to use the axes on the coordinate grid to help you.
Dmitrij [34]
I think it is b...............
8 0
3 years ago
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