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Elan Coil [88]
4 years ago
15

Find the sum or difference of each

Mathematics
2 answers:
Margarita [4]4 years ago
8 0
2- 1 3/7 would be 4/7 because you can turn 2 into 7/7 and turn 1 3/7 to 10/7 (an improper fraction). so 10/7 - 7/7 would be 4/7. You would only subtract the denominator and not the numerator.<span />
omeli [17]4 years ago
6 0
2- 1 3/7 would be 4/7.

I hope this helped! :-)
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3 years ago
Please work out all the problems on this page, no links, no i don't knows
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5 0
3 years ago
A casino wants to offer a new game with (potentially) spectacular prizes:The player flips a fair coin until they flip heads.The
MissTica

Answer:

The casino should charge for this game at least $1 to break even.

Step-by-step explanation:

We can define the prize function as

M(n)=2^{ n+1}

where M is the prize money and n is the number of tails in continous flips.

The probability of n consecutive tails can be calculated as p^n=0.5^n. The probaility of getting a head after the n consecutive tails is p=0.5, so the probability of having n consecutive tails and a head is p^{n+1}=0.5^{n+1}

Then we can calculate the expected value of M as

E(M)=p_i*M_i=(0.5)^{n+1}*2^{n+1}=1^{n+1}=1

The expected money prize for this game is $1, so the casino should charge to play at least $1 to break even.

4 0
4 years ago
Calculate the sale price on a mobile phone with a marked price of $145, and a<br> discount of 53%
Helga [31]

$68.15

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6 0
3 years ago
Read 2 more answers
A coordinate grid with 2 lines. The first line passes through (0, negative 5) and (negative 5, 0). The second line passes throug
likoan [24]

Answer:

(0, -5)

Step-by-step explanation:

The two different lines have point (0, -5) in common, so the solution is (0, -5).

4 0
2 years ago
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