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Yanka [14]
3 years ago
8

Four friends each fipped a coin different numbers of times.

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

Answer:

Sarah

Step-by-step explanation:

Alice: 75%

Mary: 80%

Sarah: 85%

Ellen: 60%

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What value could be added to 2/15 to make the sum greater than 1/2
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6/15 . as 2/15 plus 6/15 is 8/15, which is greater than 1/2
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What percent of the model is shaded?
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3 years ago
Perform the indicated operation. 10 3/7 + 19 5/9
DanielleElmas [232]
Given expression is

10 \frac{3}{7} + 19 \frac{5}{9}

Now convert mixed fraction as improper fraction as

10 \frac{3}{7} + 19 \frac{5}{9} =  \frac{10*7 + 3}{7} +  \frac{19*9+5}{9}
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                                                          =  \frac{73*9 + 176 * 7}{63}
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So the answer is 29 \frac{62}63}
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Robert and Chris can skate 4 miles in 18 minutes. How far can they ride in 45 minutes?​
adell [148]

Answer: Robert and Chris can skate 10 miles in 45 minutes.

Step-by-step explanation:

Let's start by finding the unit rate.

\frac{4}{18} =\frac{2}{9} \\\frac{18}{18} =1

Robert and Chris can skate \frac{2}{9} of a mile in 1 minute. Now we can multiply both by 45 to see how far the can go in 45 minutes.

(\frac{2}{9}) (\frac{45}{1} )\\\frac{(2)(45)}{(9)(1)} \\\frac{90}{9} \\10

45x1=45

The can skate 10 miles in 45 minutes.

6 0
3 years ago
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