A shipment contains 7 igneous, 5 sedimentary, and 5 metamorphic rocks. If 9 rocks are selected at random, find the probability that exactly 5 are sedimentary.

What statement about risks in social and behavioral sciences research is most accurate: anonymizing data effectively manages the risk of creating emotional distress. risks are specific to time, situation, and culture. there are never any risks. if a study offers potential benefits, it is not necessary to minimize risks.

Morei would really appreciate it. his eyes snapped open. a musty smell flooded his senses. the room was lowly lit, curved with smooth light gray walls. the floor was clear black tiled. he stood up, surprised to see no door, but only a trap door on the ceiling that blended in with the walls. the room was unfurnished, which struck him as strange. as you write and revise, ask yourself these questions: 1. do all of the sentences in this paragraph belong here? (unity) 2. are all of the sentences in this paragraph in the right place? (coherence-- a method of development) 3. are all of the sentences in this paragraph smoothly connected together into a whole paragraph? (coherence--use of transitional devices) once you've made certain that your paragraphs are both unified and coherent, edit your work for problems in grammar and mechanics before submitting it to your teacher.

Under the us constitution, some powers belong to the states. choose the power that belongs to the states.