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Nastasia [14]
3 years ago
6

A bag contains eight red marbles and four blue marbles. You randomly pick a marble and then pick a second marble without returni

ng the marbles to the bag. The first marble is red and the second marble is blue.
show work please thanks!
Mathematics
1 answer:
gavmur [86]3 years ago
4 0

Answer:

14/33

Step-by-step explanation:

eight red marbles and four blue marbles = 12 total

P(red) = red/total = 8/12 = 2/3

No replacement

seven red marbles and four blue marbles =11 total

P(blue) = blue/total = 7/11

P(red, no replacement, blue) = 2/3*7/11 = 14/33

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The room measures 8 inches by 5 inches on the blueprint. If the scale on the blueprint is 1 inch by 4 feet, what is the actual a
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2 years ago
1/3(4 + 18)-2²<br>PLIS I need help :(​
liraira [26]

Answer:

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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<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

1/3(4 + 18) - 2²

<u>Step 2: Evaluate</u>

  1. (Parenthesis) Add:                                                                                          1/3(22) - 2²
  2. Exponents:                                                                                                      1/3(22) - 4
  3. Multiply:                                                                                                           22/3 - 4
  4. Subtract:                                                                                                          10/3
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3 years ago
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