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2 years ago

PLEASE HELP ME OUT CCCCCCCCCCCCCCCCCC;

Mathematics

1 answer:

IRINA_888 [86]2 years ago

6 0

Answer:

I think it's the last to they sound way more independent!!!

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Cookies are sold singly or in packages of 3 or 9. With this packaging, how many ways can you buy 18 cookies?

tresset_1 [31]

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Hope this helped!

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2 years ago

Trey found three pieces of wire in his tool drawer. Here are their lengths (in centimeters). 9 , 5.59 , 16.8 What is the total l

lara [203]

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2 years ago

(5 •10^16) • (2.8 • 10^-7)

Gelneren [198K]

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2 years ago

Which expression is not equivalent to the other expressions?

Ket [755]

That would be D

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4 0

3 years ago

Read 2 more answers

Circle O, with center (x, y) passes through the points A(0, 0), B(-3, 0), and C(1, 2). Find the coordinates of the center of the

KonstantinChe [14]

Answer:

The center of the circle is

$(-\frac{3}{2},2)$

Step-by-step explanation:

Let the equation of the circle be

$x^2+y^2+2ax+2by+c=0$ , where (-a,-b) is the center of this circle.

The points lying the circle must satisfy the equation of this circle.

A(0,0)

We substitute this point to get;

$0^2+0^2+2a(0)+2b(0)+c=0$

$\implies c=0$

B(-3,0)

$(-3)^2+0^2+2a(-3)+2b(0)+c=0$

$\implies 9+0-6a+0+c=0$

$\implies -6a+c=-9$

But c=0

$\implies -6a=-9$

$\implies a=\frac{3}{2}$

C(1,2)

$1^2+2^2+2a(1)+2b(2)+c=0$

$1+4+2a+4b+c=0$

$2a+4b+c=-5$

Put the value of 'a' and 'c' to find 'b'

$2(\frac{3}{2})+4b+0=-5$

$3+4b+0=-5$

$4b=-5-3$

$4b=-8$

b=-2

Hence the center of the circle is

$(-\frac{3}{2},2)$

8 0

2 years ago