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Zielflug [23.3K]
3 years ago
12

How do you add a decimal

Mathematics
2 answers:
fiasKO [112]3 years ago
7 0
When adding decimals always line them up 
for example:    5.23
                      +6.35
                       --------
                      11.58
see simple hope I helped

harkovskaia [24]3 years ago
4 0

Answer:

Ignore the decimal until its needed

Step-by-step explanation:

Adding decimals is easy. All you need to do is remove the decimals from your simple addition equation, and solve. Then, you need to add the decimal in the depending on the number 2nd place for example

12.00 + 13.00

remove the decimal

1200 + 1300 = 2500

add the decimal

12.00 + 13.00 = 25.00

This is also helpful with decimals that don't have any zeros for example:

12.32 + 45.62

remove the decimal

1232 + 4562 = 5794

add the decimal

12.32 + 45.62 = 57.94

Their are better and more efficient ways to add decimals but if you think on a lower level than others or like to think in a less complex way to help math work be less confusing, then, I would consider this way of adding decimals,

(Thanks)

(Hope this was helpful)

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Factor the expression <br> 5x^2 -22x -15
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3 years ago
Help plz i need this done
Romashka [77]

Answer:

x ≈ 11.5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] sin∅ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Angle = 35°

Opposite Leg = <em>x</em>

Hypotenuse = 20

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute [sine]:                    sin35° = x/20
  2. Isolate <em>x</em>:                                 20sin35° = x
  3. Evaluate:                                 11.4715 = x
  4. Rewrite:                                  x = 11.4715
  5. Round:                                    x ≈ 11.5
5 0
3 years ago
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