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Anna [14]
3 years ago
5

I need help with this math question 7+(3•5)

Mathematics
1 answer:
Ainat [17]3 years ago
5 0

Answer:

The answer is 22

Step-by-step explanation:

(3 • 5) = 15

7 + 15 = 22

22 is your answer

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You pick a card at random from an ordinary deck of 52 cards. If the card is an ace, you get 9 points; if not, you lose 1 point.
Andreyy89

Answer:

a = 9\\b = 48\\c = -1

Step-by-step explanation:

We know that:

In a deck of 52 cards there are 4 aces.

Therefore the probability of obtaining an ace is:

P (x) = 4/52

The probability of not getting an ace is:

P ('x) = 1-4 / 52

P ('x) = 48/52

In this problem the number of aces obtained when extracting cards from the deck is a discrete random variable.

For a discrete random variable V, the expected value is defined as:

E(V) = VP(V)

Where V is the value that the random variable can take and P (V) is the probability that it takes that value.

We have the following equation for the expected value:

E(V) = \frac{4}{52}(a) + \frac{b}{52}(c)

In this problem the variable V can take the value V = 9 if an ace of the deck is obtained, with probability of 4/52, and can take the value V = -1 if an ace of the deck is not obtained, with a probability of 48 / 52

Therefore, expected value for V, the number of points obtained in the game is:

E(V) = \frac{4}{52}(9) + \frac{48}{52}(-1)

So:

a = 9\\b = 48\\c = -1

3 0
3 years ago
Read 2 more answers
The equation of a circle is given. Find the circumference of a circle. Write the circumference in terms of pi.
sattari [20]
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What is the coefficient of the term ​ 67xy ​? a.6/7 b.1/7 c.6xy d.6
notsponge [240]

A variable is an English letter we take for unknown values or quantities.We are given expression : \frac{6}{7}xy.

In the above given expression we have x and y English letters, because we don't know the values of them.

And we have some constant in front of those English letters.

We have \frac{6}{7} in front of xy.

<em>The coefficients are the constant numbers in front of variables.</em>

<h3>Therefore,  \frac{6}{7} is the coefficient of the term \frac{6}{7}xy.</h3><h3>Therefore, correct option is a. 6/7.</h3>
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During crawfish season, Xavier sells crawfish for $62.50 per sack and charges a $20.00 delivery fee. Which equation best represe
Licemer1 [7]

Answer:

i remember this question you have to divide and when i did that exact question my test i got it right!

Step-by-step explanation:

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3 years ago
If my slope is -2/3 and my y intercept is -1 what’s my equation?
finlep [7]

Answer:

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Step-by-step explanation:

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