The ratio of students packing lunch to those buying lunch is 2 : 9. the number of students buying lunch is how many times the number of students packing lunch?

What is the factored form of the following expressions? d^2 – 13d + 36

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 . reset next

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.