There is a rack of 11 billiard balls. balls numbered 1 through 8 are solid-colored. balls numbered 9 through 11 contain stripes. if one ball is selected at random, determine the odds for it being solid dash colored.

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Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is