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Akimi4 [234]
2 years ago
6

9. What is the coefficient of y^2? in the expansion of (x + y)^2??

Mathematics
1 answer:
klemol [59]2 years ago
3 0

Answer:

The coefficient of y² will be 1, which we can see when we expand the expression:

(x + y)²

= (x +y)(x + y)

= x² + xy + xy + y²

= x² + 2xy + y²

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A teacher is evaluating how students in her first class did on an assessment versus her last class. The box plots show the resul
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Answer:

The time a student learns mathematics is important for their score

Step-by-step explanation:

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The vertical lines that divide the boxes in two represent the value of the median.

The median is the value that divides 50% of the data.

For the class of the morning the value of the median is 50 points, with a maximum value of 80 and a minimum value of 10.

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This indicates that in general, the highest number of high scores were obtained in the afternoon class.

Therefore it can be said that the time a student learns mathematics is important for their  score

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Answer:

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Step-by-step explanation:

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If the diameter of a microscope's field is 0.12mm, how wide is an object that fills one-quarter of the field? (Explain how you'v
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Sec (a) + tan (a) = sec (a) – tan (a)
Mariulka [41]

Answer:

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Step-by-step explanation:

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