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finlep [7]
2 years ago
9

I don't really understand the question so can someone help me answer the question please?​

Mathematics
1 answer:
Ksivusya [100]2 years ago
5 0

Answer:

1/ 3

Step-by-step explanation:

If each of the cards is turned over, the probability of picking up a card of one type P(E) becomes equal to:

=> P(E) = number of cards of the required type/ total number of cards

● Total number of spades( ♤ ) = 3

{the queen, one ace and the nine are all spades}

● Total number of cards = 6

Probability of drawing a spade= 3/ 6

= 1/ 2

● Total number of "7" = 1

● Total number of cards = 6

Probability of drawing a 7

= 1/ 6

Now, what's asked is the difference in the probabilities of drawing a spade and a seven.

= 1/ 2 - 1/ 6

= 3/ 6 - 1/ 6

= 2/ 6

= 1/ 3

Hence, 1/ 3 of a greater chance of drawing a spade over a 7.

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-1 3/7 • (-3 2/3) = ?<br><br> A: 3 2/7<br> B: 5 5/21<br> C: 11<br> D: -5 5/21
Anna35 [415]

[|] Answer [|]

\boxed{5 \ \frac{5}{21}}

[|] Explanation [|]

-1 \ \frac{3}{7} * -3 \frac{2}{3}

-----------

-----------

Convert Fractions To Mixed Numbers:

-1 \ \frac{3}{7} = \frac{-10}{7}

-3 \ \frac{2}{3} = \frac{-11}{3}

Multiply Across:

\frac{-10 \ * \ -11}{7 * 3}

= \frac{110}{21}

Simplify:

= 5 \ \frac{5}{21}

\boxed{[|] \ Eclipsed \ [|]}

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3 years ago
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Step-by-step explanation:

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7 0
3 years ago
What does the expression I+ w + i + w represent
Zinaida [17]
For example:
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7 0
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Someone pls help asap this is due tmrw !!<br><br> x - 3y = -12<br> 2x + 3y = 3
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Answer:

Step-by-step explanation:

to solve this system of equations we will add them

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plug in the first equation

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4 0
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7 0
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