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Masteriza [31]
4 years ago
14

What is the answer to 7/8+4.2-4/5 equals what

Mathematics
1 answer:
natta225 [31]4 years ago
7 0
So, first turn your fractions into decimals. ⅞ = 0.875 which rounded is 0.88. 4/5 = 0.8. Next, put the decimals into the equation to replace the fractions. 0.88 + 4.2 - 0.8. Next solve the problem. So 0.88 + 4.2 = 5.08. Now your equation should look like this 5.08 - 0.8. Then subtract 0.8 from 5.08 which gives you 4.28. So 4.28 is your answer.
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(7x-1)+(13x-19)=180 solve for x
elixir [45]

Answer:

x = 10

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

Step-by-step explanation:

<u>Step 1: Define Equation</u>

(7x - 1) + (13x - 19) = 180

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

  1. Combine like terms:                    20x - 20 = 180
  2. Isolate <em>x</em> term:                              20x = 200
  3. Isolate <em>x</em>:                                       x = 10

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    (7(10) - 1) + (13(10) - 19) = 180
  2. Multiply:                               (70 - 1) + (130 - 19) = 180
  3. Subtract:                              69 + 111 = 180
  4. Add:                                     180 = 180

Here we see that 180 does indeed equal 180.

∴ x = 10 is the solution to the equation.

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3 years ago
The length of one of the diagonals of a rhombus is 6, and the perimeter is 20. What is the length of the other diagonal?
Lelechka [254]

Answer:

4

Step-by-step explanation:

3 0
3 years ago
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