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Karo-lina-s [1.5K]
3 years ago
14

For the school recycling project, the seventh grade collected sixteen more than five times as many cans as the eighth grade. The

seventh grade collected 251 cans. Select all of the equations that can be used to find the number of cans, c, the eighth grade collected.
5c=251−16

5c=251+16

5c+16c=251

5c+16=251
which one?
Mathematics
1 answer:
saveliy_v [14]3 years ago
5 0
251-16=235

235/5=47

so a
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Answer:

The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides.

10 cm + 12 cm + 5 cm + 6 cm

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Which technique for gathering data (observational study or experiment) do you think was used in the following studies?(a) The Co
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Answer:

For question a, the correct option is: This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured.

For question b, the correct option is: This is an experiment because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured.

For question c, the correct option is: This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured.

For question d, the correct option is: This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured.

Step-by-step explanation: To give us a background on why the options above were chosen, let us see the difference between Observational study and Experimental study.

In an observational study, the researcher draws inferences from an independent variable that is not under his/her control. While in an experimental study, there in an intervention and the effects of the intervention are studied.

Therefore, in the questions a to d above, all we need to do is identity which variables were influenced and which were merely observed.

For question a, the variables were only observed.

For question b, the variables were influenced.

For question c, the variables were also influenced.

For question d, the variables were merely observed.

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Rudiy27

Answer:

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Step-by-step explanation:

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