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uysha [10]
3 years ago
15

Please help I’ll mark you as brainliest if correct!

Mathematics
1 answer:
saw5 [17]3 years ago
6 0

This is a classic riddle.3 quarters4 dimes0 nickels4 pennies If you have 4 quarters, you have change for 1 dollar.If you have 5 dimes, you have change for 2 quarters.If you have any nickels, 1 of those could combine with 2 dimes to have change for a quarter.If you have 5 pennies, you have enough change for 1 nickel. 3 * .25 + 4 * .10 + 4* .01 = x.75 + .40 + .04 = x1.19 = x

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Read 2 more answers
Tell whether -3 is a solution of the inequality <br>3-4r &gt;_ 15<br>​
iragen [17]

Answer:

-3 is a solution.

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

3 - 4r ≥ 15

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

  1. [Subtraction Property of Equality] Subtract 3 on both sides:                        -4r ≥ 12
  2. [Division Property of Equality] Divide -4 on both sides:                                r ≤ -3

<u>Step 3: Compare</u>

  1. Substitute in <em>r</em>:                                                                                                   -3 ≤ -3

This is true. -3 is less than <em>or equal to</em> -3.

6 0
3 years ago
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