3 years ago

In a music group of 45 people, 1/9 are vocalists and the rest play musical instruments. How many play musical instruments

Mathematics

1 answer:

babymother [125]3 years ago

3 0

40 play musical instruments

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lana [24]

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Find the standard form of the circle x2 + y2 – 6x + 10y + 24 = 0 by completing the square.

hichkok12 [17]

Answer:

$(x-3)^2+ (y+5)^2=10$

Step-by-step explanation:

Given the equation of the circle: $x^2 + y^2 - 6x + 10y + 24 = 0$

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We begin by re-arranging:

$x^2 - 6x + y^2 + 10y = - 24$

Next, divide the coefficient of x by 2, square it and add it to both sides.

Do the same for y.

$x^2 - 6x +(-3)^2+ y^2 + 10y+5^2 = - 24+(-3)^2+5^2$

Next, we factorize

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This is the standard form.

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3 years ago

A circle above has a radius of 6 cm. What is the area of the circle?<br><br> Use = 3.14.

Ainat [17]

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