While michelle sat observing birds at a bird feeder, one fourth of the birds flew away when they were startled by a noise. two birds left the feeder to go to another stationed a few feet away. three more birds flew into the branches of a nearby tree. four birds remained at the feeder. how many birds were at the feeder initially?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Yuto and hila attempted to solve the same inequality. their work is shown below. which statement is true about the work shown above? yuto is correct because he isolated the variable correctly and reversed the inequality symbol. yuto is incorrect because he should not have reversed the inequality symbol. hila is correct because she isolated the variable correctly and reversed the inequality symbol. hila is incorrect because she should not have reversed the inequality symbol.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol