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PIT_PIT [208]
3 years ago
10

Two cards are drawn without replacement from an ordinary deck, find the probabaility that the second is a face card, given thath

at the second is not a seven, given that the first is a seven. what is the conditional probability?
Mathematics
1 answer:
Greeley [361]3 years ago
6 0
Answer is 1.1% chance:
standard deck of cards has 52 cards
jack, queen, and king are face cards, and there are four suits, so in total there are  7 face cards in the deck. There are 4 seven cards in the deck. The probability that the first card is a seven is 0.076923077--> 7.7%, then there are 7 face cards so 7/51 chance 0.137254902--> 13.7% (but that is after 7.7% of 100% has already happened, so we are looking at 13.7% chance of 7.7% chance of 100% cards. Multiply both numbers and you get 0.010558069--> 1.1% chance 
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While driving on the highway, Fiona averages 60 miles per hour. In the city, she averages 30 miles per hour. On a trip to her gr
Amiraneli [1.4K]
<span>1.       </span><span>Fiona drives 60 miles per hour on the Highway
And drives 30 miles per hour on the City.
She got a total of 312 hours in the highway and 112 hours in the city
Find the average speed of Fiona:
Formula of Speed
=> S = d / t
Let H be the distance in Highways
and Let C be the distance in City
=> H = 60 x 312
=> H = 18 720
=> C = 30 x 112
=> C = 3360
=> Total distance = 18 720 + 3 360
=> 22 080 miles
Let’s find the total time
=> H + C
=> 312 + 112
=> 424 hours

Speed = 22 080 / 424
S = 52.1 miles per hour


</span>



7 0
4 years ago
When registering their cars, owners must identify the color that covers the largest portion of the vehicle. In one region, the p
MAVERICK [17]

Answer:

Yes, the events silver and black are mutually exclusive.

Step-by-step explanation:

We are given;

the probability that car was mainly white;P(W) = 0.24

the probability that it was mainly silver;P(S) = 0.22

the probability that it was mainly black; P(B) = 0.19

We can say that while a car can certainly be black and silver, a car cannot be mainly silver and mainly black at the same time. This is because one color is going to be dominant. Thus, they cannot happen at the same time. We can therefore conclude that;

Yes, the events silver and black are mutually exclusive.

5 0
4 years ago
30PTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Yuliya22 [10]

1)

a)

P = 1500, r = 4% = 0.04, n = 5

A = 1500 (1+0.04)^5= 1824.98

He shall have $1824.98 in his account after 5 years

b)

Here P = 1500 , r = 4% = 0.04, n = 5 but simple interest

So

I=PRn= 1500(.04)(5)=300

Interest = $300

Amount in his account after 5 years = 1500 + 300 = $1800

c)

First one shall yield a better income and by 1824.98-1800 = $24.98

2)

a)

P= $2000, r = 8% = 0.08 so quaterly = 0.08/4 = 0.02, n = 1 year

A = P(1+r)^{4n}  =2000(1+0.02)^4 =2164.86

There shall be $2164.86 after 1 year

b)

P = 2000, r= 8%=0.08 and n = 1 for simple interest

I=PRn = 2000(0.08)(1)=160

Amount after 1 year shall be 2000 + 160= $2160

c)

First option is a better option.

The difference is 2164.86 - 2160 = $4.86

3)

a)

Bank A

P= 3200, r = 3.5%= 0.035, n = 3 years for simple interest

I =3200(0.035)(3)=336

Interest earned in Bank A = $336

b)

Bank B

P = 3200, r = 3.4% = 0.034, n= 3

A= P(1+r)^n=3200(1+0.034)^3=3537.62

Interest earned = 3537.62 - 3200 = $337.62

c)

Tyler must choose Bank B as it fetches greater interest

d)

The difference in interest = 337.62 - 336 = $1.62


4 0
3 years ago
Find the average of 60 75 88 and 93
Lapatulllka [165]

Answer:

The average of the four numbers is 79.

4 0
4 years ago
Select the store with the least expensive ice cream per scoop. Choose 1 answer
geniusboy [140]

Answer:

Store A

Step-by-step explanation:

A) The price per scoop is the slope, or 0.75 dollars, or 75 cents.

B) The slope is y2 - y1 / x2 - x1. Plugging in the values, we get 8-8 / 3-3 = 1. Therefore, the price per scoop is 1 dollar.

C) Two points on the graph are (2,3) and (4,6). Their slope is (6 - 3) / (4 - 2) = 3/2 = 1.5. The price peer scoop is 1.5 dollars.

The cheapest ice cream per scoop is Store A.

hope this helps! <3

5 0
2 years ago
Read 2 more answers
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