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BigorU [14]
3 years ago
7

3y2+5y-(4y2+5)-8y2-(-7-3y2)

Mathematics
1 answer:
Goshia [24]3 years ago
6 0

Answer:

-6y^2+5y+2

Step-by-step explanation:

I'm assuming you want to simplify:

3y^2+5y-(4y^2+5)-8y^2-(-7-3y^2)

Distribute to get rid of the ( ):

3y^2+5y-4y^2-5-8y^2+7+3y^2

Put like terms together:

3y^2-4y^2-8y^2+3y^2+5y-5+7

Combine the like terms:

-6y^2+5y+2

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Answer:

It should be 8

Step-by-step explanation:

C = 2r

16 =2r

r =16/2

r =8

7 0
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$299 tv with 15% discount
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Write the equation of a circle whose center is at (3,-2) and has a radius of 11.<br>Show your work!
Viefleur [7K]

Answer:

(x - 3)^{2} + (y + 2)^{2} = 121

Step-by-step explanation:

The equation of a circle has the following format:

(x - x_{0})^{2} + (y - y_{0})^{2} = r^{2}

In which r is the radius and the centre is the point (x_{0}, y_{0})

In this question:

Center at (3,-2), so x_{0} = 3, y_{0} = -2

Radius 11, so r = 11

Then

(x - 3)^{2} + (y - (-2))^{2} = 11^{2}

(x - 3)^{2} + (y + 2)^{2} = 121

3 0
3 years ago
Three men and eight women are waiting to be interviewed for jobs. If they are all selected in random​ order, find the probabilit
irakobra [83]

The probability that all men will be interviewed first is; 1/55

<h3>How to find probability combination?</h3>

To solve this question we will make use of the probability combination formula which is;

nCr = n!/(r! * (n - r)!)

Thus, since we want to find the probability that all men will be interviewed first, then we will use the formula;

3(3!)/((11C1) * (10C1) * (9C1)) = 18/990

Simplifying that fraction  gives us; 1/55

Read more about Probability Combination at; brainly.com/question/4658834

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7 0
2 years ago
Find the greatest common factor
Vikentia [17]

Answer:

3x^2y^2

Step-by-step explanation:

I think:

3*2*x*x*x*y*y*y*y

3*3*x*x*y*y

3*6*x*x*x*y*y

They all have 3x^2y^2 in common.

6 0
3 years ago
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