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klasskru [66]
3 years ago
15

Please help if u get all 3 right ill put u as brainiest​!

Mathematics
1 answer:
scoray [572]3 years ago
7 0

Answer: 13

Step-by-step explanation: Alright with the median you take all the numbers "11, 20, 17, 8, 8, 9, 20, 13, 21" and put them in numerical order. "8, 8, 9, 11, 13, 17, 20, 20, 21" Then the middle one is the median, since there are 9 numbers you take the fifth one. In this case it is 13. (Only knew the first one since I have no idea what they mean by quartiles)

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Wo cards are drawn without replacement from standard deck of 52 cards. What is the probability that the first card is a club and
iren2701 [21]

Answer:

"13 / 204 ; No, they are dependent events "

Step-by-step explanation:

The probability of getting a club at first throw is simply total number of clubs divided by total number of cards in the deck.

Total clubs is 13

Total cards in deck is 52

Hence, P(clubs) = \frac{13}{52}

<em>Since the first card IS NOT replaced, the deck has now 51 cards. We want probability of diamond. There are still 13 diamonds, so probability of diamond now would be 13/51</em>

<em />

Hence, Probability that first card is a club and the second card is a diamond should be 13/52 MULTIPLIED by 13/51

P(1st Club, 2nd Diamond) = \frac{13}{52}*\frac{13}{51}=\frac{13}{204}

<u></u>

<u>Note: </u>They are dependent events since we are calculating probability without replacement. The first draw affected the total number of cards in the 2nd draw.

2nd answer choice is right.

8 0
3 years ago
N
anygoal [31]

Answer:

Area =22/7×12×12

=281.142cm square

Step-by-step explanation:

7 0
3 years ago
2+2 equals .................................................
Sholpan [36]

2+2=4

Are you sure you need help with this

4 0
4 years ago
Read 2 more answers
Evaluate the expression : common log of square root 9/25.
tekilochka [14]

You want log √(9/25).  Recognizing that √9 = 3 and that √25 = 5, we get

log 3/5, which by rules of logs comes out to log 3 - log 5.

To four decimal places:

log 3 - log 5 = 0.4771 - 0.6990, or -0.2218.

4 0
3 years ago
A x b = 400<br> a ÷ b = 4<br>how much is b​
laila [671]

Answer:

4 x 100 = 400

400 ÷100 = 4

B= 100

Step-by-step explanation:

8 0
3 years ago
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