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Nutka1998 [239]
3 years ago
14

Lola pulls two marbles from a bag containing four red marbles, four blue marbles, and 12 yellow marbles without replacing them.w

hat is the probability that she pulled out a red marble first and a yellow marble second? express your answer in decimal form, rounded to the nearest hundredth.
Mathematics
2 answers:
Degger [83]3 years ago
5 0
It is the 2nd option. 0.13
Sauron [17]3 years ago
5 0

Answer:

The probability of that she pulled out a red marble first and a yellow marble second is:

0.13

Step-by-step explanation:

It is given that:

Lola pulls two marbles from a bag containing four red marbles, four blue marbles, and 12 yellow marbles without replacing them.

This means that there are a total of:4+4+12=20 marbles.

Now we are asked to find the probability that she pulled out a red marble first and a yellow marble second.

The probability of choosing a red marble out of 20 marbles is:

P_1=\dfrac{4}{20}

and the probability of choosing a yellow marble on the second draw(i.e. now we have to choose among the 19 remaining marbles) is:

Number of yellow marbles in the bag/19

=P_2=\dfrac{12}{19}

Hence, the probability of choosing a red and then a yellow marble is:

P=P_1\times P_2\\\\P=\dfrac{4}{20}\times \dfrac{12}{19}=\dfrac{12}{95}=0.1263157.

Hence, to the nearest hundredth the probability is:0.13

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masya89 [10]

Answer:

50.6

-I hope this helps have a great day!

8 0
2 years ago
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I really don't understand this! Can someone give an explanation to me?
Pani-rosa [81]

Step-by-step explanation:

Total number of Black cards is 26

Total number of cards having a ten is 4 out of which 2 are red

Number of favourable outcomes=28

TOTAL number of possible outcomes =52

Therefore the probability = 28/52 = 7/13

8 0
3 years ago
IMMEDIATE HELP PLEASE
9966 [12]

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4 0
2 years ago
The expression below represents the perimeter, in feet, of Manual’s garden.
agasfer [191]

a) Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

b) The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as 98 square feet

<h3>What is the perimeter?</h3>

The perimeter is defined as the sum of all the sides of the figure. Now we have The area in, square feet, of Shawn’s garden is found be calculating 15(2x + 7). Shawn incorrectly says the area can also be found using the expression 30x + 7.

The correct area =15(2x + 7).

= 30x + 105 square feet

The error in Shawn’s expression is

= 15(2x + 7)

= 30x + 7 square feet

Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as

30x + 105 square feet - 30x + 7 square feet

= 30x + 105 - (30x + 7)

= 30x - 30x + 105 - 7

= 98 square feet

To know more about perimeter follow

brainly.com/question/19819849

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6 0
2 years ago
The area of a triangle is 22 yd with a base of 8 years. What is the height, in yards?
cluponka [151]
The area of a triangle can be found using the formula 1/2*b*h

We can substitute what we know in now, 22 = 1/2*8*h

22 = 4*h
22 = 4*5.5

The answer would be 5.5 yards

I hope this helps!
6 0
3 years ago
Read 2 more answers
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