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MaRussiya [10]
3 years ago
6

I'm honestly confused help

Mathematics
1 answer:
olga55 [171]3 years ago
5 0

Answer:

(-6, 5)

Step-by-step explanation:

-6 + 5 = -1

x = -6

y = 5

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The probability of Jane wins a game is 7/10. Jane plays a game 50 times. Find the number of times she is expected to win the gam
viktelen [127]

Answer:

35 times

Step-by-step explanation:

7/10 * 50 = 35

3 0
2 years ago
A coin is flipped 10 times where each flip comes up either heads or tails. How many possible outcomes (a) contain exactly two he
Tems11 [23]

Answer:

a. 45

b. 176

c. 252

Step-by-step explanation:

First take into account the concept of combination and permutation:

In the permutation the order is important and it is signed as follows:

P (n, r) = n! / (n - r)!

In the combination the order is NOT important and is signed as follows:

C (n, r) = n! / r! (n - r)!

Now, to start with part a, which corresponds to a combination because the order here is not important. Thus

 n = 10

r = 2

C (10, 2) = 10! / 2! * (10-2)! = 10! / (2! * 8!) = 45

There are 45 possible scenarios.

Part b, would also be a combination, defined as follows

n = 10

r <= 3

Therefore, several cases must be made:

C (10, 0) = 10! / 0! * (10-0)! = 10! / (0! * 10!) = 1

C (10, 1) = 10! / 1! * (10-1)! = 10! / (1! * 9!) = 10

C (10, 2) = 10! / 2! * (10-2)! = 10! / (2! * 8!) = 45

C (10, 3) = 10! / 3! * (10-3)! = 10! / (2! * 7!) = 120

The sum of all these scenarios would give us the number of possible total scenarios:

1 + 10 + 45 + 120 = 176 possible total scenarios.

part c, also corresponds to a combination, and to be equal it must be divided by two since the coin is thrown 10 times, it would be 10/2 = 5, that is our r = 5

Knowing this, the combination formula is applied:

C (10, 5) = 10! / 5! * (10-5)! = 10! / (2! * 5!) = 252

252 possible scenarios to be the same amount of heads and tails.

6 0
3 years ago
47:30
Diano4ka-milaya [45]

Answer:

C. Determine the principal square root of both sides of the equation.

Step-by-step explanation:

6 0
3 years ago
Divide round your answer to the nearest hundredth 1divide3
salantis [7]
1 divided by 3
\frac{1}{3}
Turn fraction into decimal
0.333
Since it is repeating, and it's a 3, you don't need to round it up
The rule is 5+ = round up while 4- = round down.
7 0
3 years ago
PLEASEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPPPPPPP find the number if 2.5 of it is .75
sammy [17]

Answer:

3.332

Step-by-step explanation:

take 2.5/3=0.833

0.833*4=3.332

hopefully this is right

im 95% sure its right

3 0
2 years ago
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