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4 years ago

Graph the circle which is centered at (3,-2) and has a radius of 5 units.

Mathematics

1 answer:

goldenfox [79]4 years ago

4 0

Answer:

(x-3)^2+(y+2)^2=25

Step-by-step explanation:

c=(a,b) coordinates of center of circle

(x-a)^2+(y-b)^2=r^2 circle equation

a=3 b=-2 r=5

(x-3)+(y+2)=5^2

(x-3)^2+(y+2)^2=25

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Ms. Montesinos has 5 fish in her tank

Step-by-step explanation:

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3 years ago

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Answer:

y = 3x-2

Step-by-step explanation:

We can find the slope using the formula

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4 years ago

Professor Liu gave the same quiz to the students in her morning class and in her afternoon class. The average (arithmetic mean)

natka813 [3]

Answer:

Afternoon class has more students.

Step-by-step explanation:

Let m be the number of students in the morning class and n be the number of students in the afternoon class.

The average score for the students in the morning class was 80, then the sum of their scores is $80m.$

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The sum of the scores of both classes is

$80m+86n$

and the average score is

$\dfrac{80m+86n}{m+n}$

The average (arithmetic mean) score for the two classes combined was 84, then

$\dfrac{80m+86n}{m+n}=84\\ \\ 80m+86n=84m+84n\\ \\86n-84n=84m-80m\\ \\2n=4m\\ \\n=2m$

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