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fgiga [73]
4 years ago
11

Barbara is planning a party . she invited some school friends and 2 times as many friends from her swimming club as school frien

ds . if a total of 21 friends came to her party , how many school friends did she invite
Mathematics
1 answer:
densk [106]4 years ago
5 0
She invited 7 school friends
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In a survey of some tourists, 80% of the tourists have been to India and 35% of the tourists have been to china.If all the touri
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Answer:

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Step-by-step explanation:

This sort of problem can be solved using a 2-way table that categorizes tourists by combination of destinations. Of the four possible combinations, one is ruled out (China, but not India). We can determine percentages and numbers for the combinations of interest using the given data.

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80% have been to India, so 20% have not. All of those have also not been to China. Since tourists in that category number 260, there must be ...

  260/20% = 1300 . . . tourists surveyed

Of the 80% who have been to India, 35% have been to China. That leaves 45% who have been to India, but not China. This number is ...

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2 years ago
Is the difference between two rational numbers always rational number
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7 0
3 years ago
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Paraphin [41]
35,000
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An isosceles triangle has base angles that each measure 42 degrees.Which equation can be used to find z, the measure of the thir
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Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
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