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Pachacha [2.7K]
2 years ago
11

A.

Mathematics
1 answer:
makkiz [27]2 years ago
5 0

Answer:)

Step-by-step explanation:

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Add the polynomials. <br> (7y^2+2y-9)+(-3y^2-y) = ?
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(7 y^{2}  + 2y - 9) + (-3 y^{2} -y) \\ &#10; \\ &#10;= 4y^{2} + y - 9
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3 years ago
X 5,10,15,20,25 , Y 25,50,75,100,125 Based on the information in the table, what is the constant of proportionality?
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5

Step-by-step explanation:

because its counting up by 5

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are there any options?

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3 years ago
Two cities are 252 miles apart. How far are the two cities from one another on a map with a scale of 1/4 inches: 18 miles?
tekilochka [14]

Answer:

3.5 inches

Step-by-step explanation:

create a proportion:

inches / miles = inches / miles

let 'x' = distance in inches

<u>1/4</u> = <u> x </u>

18    252

18x = 252(1/4)

18x = 63

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5 0
3 years ago
In a poker hand, John has a very strong hand and bets 5 dollars. The probability that Mary has a better hand is .04. If Mary had
mr_godi [17]

Answer:

When Mary raises the probability that she has a better hand is 0.273

Step-by-step explanation:

In the poker game it is given that the probability that Mary has a better hand than John is 0.04.

Let the event that Mary has a better hand than John be A.

Let the event that that Mary raises the stakes be B.

It is also given that if Mary has a better hand than John then she would raise with a probability of 0.9

Therefore p(B | A) = 0.9

If Mary has a poorer hand she will raise with a probability of 0.1

Therefore p(B | A') = 0.1

Given that Mary raises the probability that she has a better hand is given by

p(A | B)

 = \frac{p(A\cap B)}{p(B)} = \frac{p(A)p(B | A)}{p(A)p(B | A) + p(A')p(B | A')}  = \frac{(0.04 \times 0.9) }{(0.04 \times 0.9) + (0.96 \times 0.1)}  = \frac{36}{36 + 96}  = \frac{36}{132}  = \frac{3}{11}

= 0.273

So when Mary raises the probability that she has a better hand is 0.273

3 0
4 years ago
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