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Veseljchak [2.6K]
3 years ago
6

Please answer I’ll rate brainlyest

Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0

Answer:

D

Step-by-step explanation:

We can choose 3 cards from 52 cards in C_3^{52} different ways.

1. There are 4 aces and 4 tens. To select 2 aces form 4 we have C^4_2 different ways and to select 1 ten from 4 we have C^4_1 different ways. Thus, the probability

Pr(\text{2 aces and 1 ten})=\dfrac{C^4_2\cdot C^4_1}{C^{52}_3}.

This option is false.

2. There are 4 fives. To select 2 fives form 4 we have C^4_2 different ways. But we have to choose 3 cards, so the remaining 3rd card must be chosen from the rest 48 cards in C^{48}_1 different ways. Thus, the probability

Pr(\text{2 fives})=\dfrac{C^4_2\cdot C^{48}_1}{C^{52}_3}.

This option is false.

3. There are 13 hearts and 13 spades. To select 1 heart form 13 we have C^{13}_1 different ways and to select 2 spades from 13 we have C^{13}_2 different ways. Thus, the probability

Pr(\text{1 heart and 2 spades})=\dfrac{C^{13}_1\cdot C^{13}_2}{C^{52}_3}.

This option is false.

4. There are 4 kings. To select no kings we have C^{48}_3 different ways . Thus, the probability

Pr(\text{no kings})=\dfrac{C^{48}_3}{C^{52}_3}.

This option is true.

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MrRissso [65]

Answer:

B x=-6

x=2

Step-by-step explanation:

8 0
2 years ago
Explain how to convert numbers from standard form to scientific.
sweet [91]

Answer:

Start by moving the decimal place in the number until you have a coefficient between 1 and 10. The number of places to the left that you had to move the decimal point is the exponent. so for example, 0.000345 would be 3.45(10)^4

Step-by-step explanation:

Hope that helps!

8 0
2 years ago
Please help me
Scilla [17]

Answer:

Therefore, the original price of the hat is 22.5$.

5 0
2 years ago
3² +4² = 5²,
AlekseyPX

Answer:

They are all true

Step-by-step explanation:

1. 3² +4² = 5²

3x3 + 4x4 = 5x5

  9   +  16  =  25

25 = 25

-----------------------

2. 6² + 8² = 10²

36 + 64 = 100

100 = 100

------------------

3. 9² + 12² = 15²

81 + 144 = 225

225 = 225

-------------------

4. 5² +12² =13²

25 + 144 = 169

169 =169

-------------------

7 0
9 months ago
If M and m represents the number of sexagesimal and centesimal minute of any angle respectively, prove that M/27=m/50.​
riadik2000 [5.3K]

Answer:

if ma and m id black life matters if balck

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3 years ago
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