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vaieri [72.5K]
4 years ago
14

Helppp!!!!laura is playing a card game with her friend.she will draw two cards from those pictured.

Mathematics
1 answer:
puteri [66]4 years ago
5 0

Answer:

10

30%

Step-by-step explanation:

In this case it would be the combination of 2 taken from 5.

That is, when n = 5 and r = 2

nCr = n! / r! * (n-r)!

replacing

5C2 = 5! / (2! * 3!)

5C2 = 10

Which means that the sample space is 10 possible combinations.

the probability that the card you draw is even is 3/5, since there are 3 even cards that exist and 5 is the total number of cards.

Now, so that both are for it would be the multiplication of the previous probability and 2/4 because an even card and a card in general have already been drawn:

(3/5) * (2/4) = 0.3

So the probability that both are even is 30%

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Solve the four problems below. Which of the following problems can be solved by finding ? 3 divided by 1/2
Anastasy [175]

Answer:

(a)=6\\(b)=1\ \frac {1}{2}\\(c)=1\ \frac {1}{2}\\d=6

Step-by-step explanation:

(a)

3 ft long when divided into half ft each will be

3ft ÷1/2 ft

We change the ÷ to × then the second part is reciprocated hence

3ft÷1/2= 3ft×2/1=6 pieces

(b)

The question requires us to get the differences. Initially, Phil makes 3 quarts of soup but the family takes only half of the original quantity to mean Phil remains with the other half.

Therefore, half of 3 is 3×1/2=3/2= 1.5 or 1 1/2

(c)

Hiding 3 pounds of gold into two equal sections means 3 is divided by 2

3÷2=1.5 or 1 1/2

(d)

If half, 0.5 represent 3 cups then full quantity represent x

0.5=3 cups

1=x

By cross multiplication

1*3/0.5=6

7 0
3 years ago
Put into mathematical equation: one fifth the sum of 7 and a number
pashok25 [27]

Answer:

(x+7)·.2

Step-by-step explanation:

The sum of x and 7 is x+7. The word sum indicates addition. Then it says multiply by 1/5, so i converted it to decimal which is .2

6 0
3 years ago
If 20% of the people who shop at a local grocery store buy apples, what is the probability that it will take no more than 5 cust
Leokris [45]

Answer:

C) Using a random digits table select one digit numbers where 0-1 is a customer who buys apples and 2-9 is a customer who does not. Keep selecting one digit numbers until you get a 0 or 1. Record the number of digits selected.

Step-by-step explanation:

There are 10 digits from 0 to 10

0-1 are 2 out of 10

2/10 × 100 = 20%

Therefore 20% chance of buying apples

5 0
3 years ago
Two bicyclists are 200 miles apart when they start racing towards one another. If their speeds are 12 mph and 6 mph respectively
Vladimir79 [104]

Answer:

10 hours.

Step-by-step explanation:

Two bicyclists are 200 miles apart when they start racing towards one another.

Their speeds are 12 mph and 6 mph respectively.

Distance = speed × time

Let the time taken by bicyclists = t

We have to calculate the time when they 20 miles apart this means they have covered the distance of 200 - 20 = 180 miles

t(12mph) + t(6mph) = 180

18t = 180

t = \frac{180}{18}

t = 10 hours

It will take 10 hours to both the bicyclists before they are 20 miles apart.

8 0
3 years ago
Read 2 more answers
Caroline saved $3.84 on a discounted item that was marked down 15% off of the
Sliva [168]

Answer:

$51.84

Step-by-step explanation:

First you neeed to figure out how much 40% of 80 is,

It is 38

Next subtract that from 80 to get the discounted price

To figure out how much is sales tax, Find out what 8% of 48 is it is 3.84

Add the to 48 and you have your answer

8 0
4 years ago
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