Mathematics, 22.08.2021 23:10 Kkampudiaa
Fred is conducting a controlled experiment to test whether using a grow light at night will help a tomato plant grow faster. Below are the steps to Fred's experiment:
Plant tomato plants in two separate, but identical, flowerpots.
Place the flowerpots in the same area outside during the day.
At night, bring both flower pots inside and place one in the dark and one under a grow light.
Give the plants the same amount of food and water each week.
Measure the growth of the plants.
Draw conclusions based on the data collected.
Which of the following variables must Fred hold constant in this experiment?
A.
the amount of time both plants spend in the dark
B.
the type of tomato plants used
C.
the length of time this experiment is carried out
D.
the amount of time both plants spend in the light
Answers: 2
Mathematics, 21.06.2019 20:20
Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?
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Mathematics, 21.06.2019 21:00
Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?
Answers: 2
Mathematics, 21.06.2019 21:30
X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /
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Fred is conducting a controlled experiment to test whether using a grow light at night will help a t...
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