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2 years ago

10

A bag contains a total of 100 black and white marbles. Without looking a marble is chosen, recorded, and placed back in the bag.

The student records 8 black marbles and 2 white marbles. Predict the number of black marbles in the bag.

1 answer:

8_murik_8 [283]2 years ago

8 0

80 black and 20 white

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katrin2010 [14]

Answer:

230 - 151 + 180 + (43 - 12) = 290

Step-by-step explanation:

Use PEMDAS.

Evaluate the expression in the parentheses:

230 - 151 + 180 + (43 - 12)

43 - 12 = 31

230 - 151 + 180 + 31

Add and Subtract From Left to Right:

230 - 151 + 180 + 31

79 + 180 + 31

259 + 31

290

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