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4 years ago

11

HELPP ASAP HURRY 30 POINTS This graph models the number of teachers assigned to a school, as determined by the number of student

s. What is the constant of proportionality?

1 answer:

____ [38]4 years ago

6 0

Answer:

1:4

Step-by-step explanation:

teacher:student =1:4

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(2x + 3)" and solve for x

Novosadov [1.4K]

Answer:

2x−3=x

Move all terms containing x

to the left side of the equation.

Subtract x

from both sides of the equation.

2x−3−x=0

Subtract x

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x−3=0

Add 3

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x=3

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Answer:

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What is the center of the ellipse x2+5y2–45=0?

jeka94

Answer:

Center is at (0,0)

Step-by-step explanation:

An equation of ellipse in standard form is:

$\displaystyle{\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2} = 1$

Where center is at point (h,k)

From the equation of $\displaystyle{x^2+5y^2-45=0}$ . First, we add 45 both sides:

$\displaystyle{x^2+5y^2-45+45=0+45}\\\\\displaystyle{x^2+5y^2=45}$

Convert into the standard form with RHS (Right-Hand Side) equal to 1 by dividing both sides by 45:

$\displaystyle{\dfrac{x^2}{45}+\dfrac{5y^2}{45}=\dfrac{45}{45}}\\\\\displaystyle{\dfrac{x^2}{45}+\dfrac{y^2}{9}=1}$

Therefore, the center of ellipse is at (0,0) since there are no values of h and k.

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Katen [24]

Step-by-step explanation:

It is (A)95° by using External Angle Property of triangles.

BTW whats up with that order C-D-B-A

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