Mathematics, 08.09.2020 06:01 synite
First-grade students are randomly divided into two groups. One group is given a fruit and vegetable for lunch; the other is given candy for lunch. After lunch, each group is given an attention test to compare hyperactivity. Choose the correct description of the study. A. The study is an observational study because the researchers control one variable to determine the effect on the response variable. B. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest. C. The study is an observational study because the study examines individuals in a sample, but does not try to influence the variable of interest. D. The study is an experiment because the researchers control one variable to determine the effect on the response variable.
Answers: 2
Mathematics, 22.06.2019 00:30
Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.
Answers: 1
Mathematics, 22.06.2019 01:30
Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?
Answers: 1
Mathematics, 22.06.2019 01:50
Thomas is using a drawing program to complete a construction. which construction could he be completing? two perpendicular lines are drawn. inscribing an equilateral triangle in a circle inscribing a square in a circle inscribing a regular pentagon in a circle inscribing a regular hexagon in a circle
Answers: 1
First-grade students are randomly divided into two groups. One group is given a fruit and vegetable...
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