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Helen [10]
2 years ago
9

How can i estimate 75.78 - 49.381 by first rounding each number to the nearest whole number

Mathematics
1 answer:
Andre45 [30]2 years ago
8 0
First you look at the tenths place of each number.
If the number is 0-4 then the ones place stays the same however if the number is 5-9 then the ones place goes up one
So you nearest whole numbers are 76-49
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Answer:

a) 19/15 b) 1/3

Step-by-step explanation:

in both the question I reduced the numbers with 5

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2 years ago
Find the value of − √49
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Im bored in this quarentine and have a lot of work to catch up on. One of my math problems is "How much water should be added to
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Answer:

20/3  ounces of water is added.

Step-by-step explanation:

how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic acid to obtain a 30% solution of muriatic acid?

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The acid is 40% of 20 ounces = 8 ounces.

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3 years ago
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2 years ago
Solve the equation.-7=y/7
ad-work [718]

Answer:

y = -49

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</u>

-7 = y/7

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

  1. Multiply 7 on both sides:                    -49 = y
  2. Rewrite:                                               y = -49
7 0
3 years ago
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