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Varvara68 [4.7K]
4 years ago
10

suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. You return the first marbl

e to the bag and then choose again. Find P(red then blue)
Mathematics
1 answer:
Marta_Voda [28]4 years ago
8 0

Answer:

15/121 is the answer.

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What is the answer to this question
nikdorinn [45]
The answer would be c because when you find what the variable is and then you would add g to 33 to try to get 48
3 0
3 years ago
Please Help Me ASAP.
Evgesh-ka [11]

Answer:

Step-by-step explanation:

If y= x + 4 then plug it into the other equation where the y is. So 5x + x +4=22. Then solve.

for x                                                                              for y

5x + x + 4=22                                                               y=x +4

6x+4=22                                                                         y=3+4

22-4=18                                                                            y=7

6x = 18

18/6=3                                                      

x=3                                                         so, x=3 and y=7

7 0
3 years ago
Write the explicit formula that represents the geometric sequence -2, 8, -32, 128
Jet001 [13]

The Geometric Sequence Formula:

a_n=a_1r^{n-1}

We have:

a_1=-2,\ a_2=8,\ a_3=-32,\ a_4=128,\ ...

d=\dfrac{a_{n+1}}{a_n}\to d=\dfrac{8}{-2}=-4

Substitute:

a_n=-22\cdot(-4)^{n-1}=-22\cdot(-4)^n\cdot(-4)^{-1}=-22\cdot(-4)^n\cdot\left(-\dfrac{1}{4}\right)=5.5(-4)^n

7 0
3 years ago
Read 2 more answers
Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Which test sco
alisha [4.7K]

Answer:

532

Step-by-step explanation:

The score that represents the top 20% = A score = 80%

Z score for 80% percentile = 0.842

We solve using the z score formula

z = (x-μ)/σ, where

x is the raw score = ??

μ is the population mean = 490

and σ is the population standard deviation = 50

Hence:

0.842 = x - 490/50

Cross Multiply

0.842 × 50 = x - 490

x = 0.842 × 50 + 490

x = 42.1 + 490

x = 532.1

Approximately = 532

Therefore, the test score = 532

7 0
3 years ago
Read 2 more answers
Is 2/5 - (-5/6) positive, negative, or zero?
vovangra [49]

Answer:

Positive

Step-by-step explanation:

2/5 - (-5/6) = 1 7/30

7 0
3 years ago
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