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Drupady [299]
3 years ago
9

Jenna has a bag that contains 7 red marbles and 25 blue marbles. She selects a marble at random, and then, without replacing the

first one, selects another marble at random.
 
What is the probability that Jenna selects a blue marble and then a red marble? Round your answer to the nearest percent.
 
Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
5 0
I think the answer is somewhere above 50%
Leokris [45]3 years ago
4 0
Probability to get a blue marble first = \frac{25}{25+7} =  \frac{25}{32}

Probability of getting a red marble next = \frac{7}{32-1} =  \frac{7}{31}

Total probability = \frac{25}{32}*  \frac{7}{31}  =  \frac{175}{992}

Percentage probability = \frac{175}{992} *100= 17.6
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Simplifyiing 
the greatest common factor is 3  so 

3x - 9y + 12 = 3(x - 3y + 4)
5 0
3 years ago
Plz help fast will mark the brainiest!!!
tiny-mole [99]
3x10^-6 is the answer
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Alex787 [66]

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Step-by-step explanation:

8 0
4 years ago
Christopher estimates it will take him half an hour to complete his math homework. He is able to complete it in 25 minutes. What
marin [14]

Answer:

The percent error in his estimate is<u> 16.67%</u>.

Step-by-step explanation:

Given:

Christopher estimates it will take him half an hour to complete his math homework.

He is able to complete it in 25 minutes.

Now, to find the percent error  in his estimate.

Time estimates of completing homework = 30 minutes.

Time actual taken to complete homework = 25 minutes.

Error in estimate = Time estimates of completing homework - Time actual taken to complete homework.

Error in estimate = 30 minutes - 25 minutes.

Error in estimate = 5 minutes.

Now, to get the percent error:

Percent\ error =\frac{Error\ in\ estimate}{Time\ estimates\ of\ completing\ homework} \times 100.

Percent\ error=\frac{5}{30} \times 100

Percent\ error=\frac{500}{30}

Percent\ error=16.67\%.

Therefore, the percent error in his estimate is 16.67%.

6 0
4 years ago
The sum of four consecutive integers is −46. What is the smallest of these integers?
Gwar [14]

Answer:The integers are -13, -12 and -11.

Step-by-step explanation:

Let the four numbers be n, n+1, n +2, and n+3

Therefore (n )+ (n+1 )+(n+2) + (n +3) = -46

4n + (1 +2+3) = -46

4n + 6= -46

Subtract 6 from both sides to get the value of n

4n +6 - 6= -46 -6

4n = -52

Divide both sides by 4

n = -52/4

n = -13

Therefore, n + 1 = -13 + 1= -12

n + 2= -13 + 2 = -11

The integers are -13, -12 and -11.

I hope this helps, please mark as brainliest.

3 0
3 years ago
Read 2 more answers
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