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jeka94
3 years ago
5

What is the answer to 10-2•9+(-1)

Mathematics
1 answer:
mixer [17]3 years ago
8 0

Answer:

-9

Step-by-step explanation:

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A game involves selecting a card from a regular 52-card deck and tossing a coin. The coin is a fair coin and is equally likely t
barxatty [35]

Answer:

Expected net earning X for this case is \frac{18}{26} =$0.6923

Step-by-step explanation:

We need to calculate the probability of the case and multiply by the net earning. The Case is:

<u>the card is a Face card, and the coin lands on Heads</u><u>:</u>

<em>Net earning</em> = 9-3 =6

There are 12 Face Cards in a regular 52-card deck. Then,

<em>Probability  of a Face Card</em>= \frac{12}{52}

<em>Probability that the coin lands on Tails</em> = \frac{1}{2}

Then <em>total probability of the case</em> is = \frac{12}{52} × \frac{1}{2} =\frac{3}{26}

Expected net earning X for this case is = \frac{3}{26} × 6 = \frac{18}{26}

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3 years ago
Can a number be a factor and a multiple of<br> itself?
valkas [14]

Answer:

Yes

Step-by-step explanation:

Example, the number 4:

Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44

Factors of 4: 1, 2, 4

5 0
3 years ago
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(1+2i) (2+5i)
Lostsunrise [7]

Answer:

Step-by-step explanation:

first multiply 1 with 2+5i then multiply 2i with 2+5i and you will get

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then in the next step add 4i and 5i you will get 9i

in the next step put i^2=-1 and you will get -10

in the last step just substract 2-10 you will get -8 and 9i

and your answer will be -8+9i

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4 years ago
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Answer:

10 x + 27 : 5

Step-by-step explanation:

Just Simplify  

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3 years ago
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Step-by-step explanation:

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