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vodomira [7]
3 years ago
12

4.

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
7 0

Answer:

.093

Step-by-step explanation:

There are 63 marbles in the jar

P(pick a blue) = 32/63

Since you are not replacing that marble, so there are 62 marbles in the jar, 31 blue, 23 black, 8 white

P(pick a black) = 23/62

Now there are 61 marbles in the jar. 22 black, 31 blue and 8 white

P(not a blue) = 30/61

P(blue, black, not blue) = (32/63)(23/62)(30/61)

                                      = .093

Luden [163]3 years ago
3 0

Answer: 0.093 chance

Step-by-step explanation:

23 black + 32 blue + 8 white = 63 total

FIRST MARBLE IS BLUE:

32/63

SECOND MARBLE IS BLACK:

23/62

LAST MARBLE IS NOT BLUE:

30/61

MATH:

32/63*23/62*31/61 = 0.093

sorry if it’s wrong but I think it’s right

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5 0
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Eduardwww [97]

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Step-by-step explanation:

5 0
3 years ago
1) Sally sprints 300 yards in a minute. Quadra runs 20% further than Sally in the same time.
Free_Kalibri [48]
1) answer = 360
explanation =
-> 10% of 300 = 300*10
-> 10% of 300 = 30
-> 20% = 10% x 2
-> 20% = 30 x 2
-> 20% = 60
-> 300 yards ( distance they ran ) + 60 yards ( how much more distance Quadra ran ) = 360 yards
2) answer = Newton spends 10 minutes or 1/6 hours reading
explanation =
-> 25% = 1/4
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-> 40% = 12
-> 10% = 3
-> 40*4=10 and 12*4=3
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3 0
3 years ago
Solve the system by the substitution method.<br> x-2y = -2<br> y = - 3x + 8
aliina [53]

x-2y = -2

x-2(-3x+8)=-2

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(-2)(8)=-16

x+6x-16=-2

7x-16=-2

move -16 to the other side

sign changes from -16 to +16

7x-16+16=-2+16

7x= -2+16

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divide both sides by 7

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x=2

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y=-3x+8

y=-3(2)+8

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=2

Answer:(2,2)

6 0
3 years ago
Annika pays 2/25 of her weekly income into a retirement fund. If she pays £42 into the retirement fund, what is her weekly incom
skad [1K]

Answer:

Below.

Step-by-step explanation:

Let x be the Annika's weekly income.

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2x/25  =  42

x  =  42(25/2)

x  =  525

Her weekly income is $525.

6 0
3 years ago
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