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RSB [31]
3 years ago
13

A crop scientist is conducting research with a drought resistant corn hybrid. She is interested in determining if increasing the

spacing between these plants will increase yield. She prepares 30 single acre plots and randomly assigns 15 to have normal spacing while the other 15 are planted with an expanded spacing. The resulting average yield for each group of 15 plots was recorded.
Select all that apply.

Select one or more:
a. The explanatory variable is whether the corn plants had normal spacing or expanded spacing.
b. The response variable is the yield of the crops.
c. The explanatory variable is the yield of the crops.
d. The response variable is whether the corn plants had normal spacing or expanded spacing.
e. This study is best described as an experiment.
f. This is best described as an observational study.
Mathematics
2 answers:
Irina-Kira [14]3 years ago
6 0
The explanatory variable is whether the corn plants had normal spacing or expanded spacing.

The response variable is the yield of the crops.

This study is best described as an experiment.
sdas [7]3 years ago
3 0

Answer:

A , B and E.

Step-by-step explanation:

the scientist can control and deal with the measure of manure that is given to a solitary corn plants. thus A is correct.

The reaction variable is the yield recorded for each plot due to the fact that the yield recorded in each plot is needed to check  whether the compost is given or not. choice B is also correct

it's considered an experiment because the specialist is controlling the autonomous variable. then E is a right choice.

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Nick is 8 years older than Sara, therefore

y = x - 8


3 0
3 years ago
A math class has 7 girls and 3 boys in the seventh grade and 3 girls and 9 boys in the eighth grade. The teacher randomly select
Bumek [7]

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4 0
3 years ago
room temperature is considered to be 70 fahrenheit suppose the temperature is 23 celsius is this greater than or less than room
tatiyna

Answer:

Greater than

Step-by-step explanation:

(<em>C</em> × 9/5) + 32 = <em>F</em>

(23°C × 9/5) + 32 = 73.4°F

Therefore, 23°C is greater than room temperature (70°F).

3 0
3 years ago
Read 2 more answers
Use a vertical format to subtract the polynomials.<br> 7x2 - 7x + 1<br> - (10x2<br> + 9x – 5)
juin [17]
7x^2 minus 10x^2 is 3x^2

-7x +9x is 2x

Lastly, 1 + -5 is -4

So your answer should be 3x^2 +2x-4. I hope this helps. Also I hope the picture is clear enough to see!

4 0
3 years ago
Grrrrrr. <br> Please help!! <br> Will mark and star!!
Vadim26 [7]
I would say A, even though i am not sure
5 0
3 years ago
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