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frozen [14]
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.​
Mathematics
1 answer:
8_murik_8 [283]2 years ago
8 0
80 black and 20 white
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9
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

<em>None of the given options are correct. </em>

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natka813 [3]
A- positive
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A was positive because 5-2 would be positive 3.
B was negative because 8-12 would be negative 4.
C was positive because -5+8 is positive 3.
4 0
3 years ago
Q)on a book case there are 35 science books ,28 history books,10 cook books,and 10 mystery novel .how many books are on the book
Finger [1]

Answer:

83

Step-by-step explanation:

7 0
3 years ago
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