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12345 [234]
3 years ago
6

A jar contains 5 blue marbles, 7 yellow marbles, and 8 green marbles. What is the probability of randomly choosing a blue marble

, not replacing it, and then choosing a green marble?
Mathematics
1 answer:
amm18123 years ago
7 0

Answer:

I think it is 27%

Step-by-step explanation:

I'm not sure but I hope I'm correct

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Factor completely 3bx2 − 9x3 − b + 3x. (b − 3x)(3x2 − 1) (b + 3x)(3x2 + 1) (b + 3x)(3x2 − 1) Prime
Daniel [21]
3bx^2-9x^3-b+3x=\boxed{3x^2}\cdot b-\boxed{3x^2}\cdot3x\fbox{-1}\cdot b\fbox{-1}\cdot (-3x)\\\\=\boxed{3x^2}(b-3x)\fbox{-1}(b-3x)=\boxed{(b-3x)(3x^2-1)}\\\\completely:\\use:a^2-b^2=(a-b)(a+b)\to3x^2-1=(x\sqrt3)^2-1^2=(x\sqrt3-1)(x\sqrt3+1)
therefore:\\3bx^2-9x^3-b+3x=(b-3x)(3x^2-1)\\=\underline{\underline{(b-3x)(x\sqrt3-1)(x\sqrt3+1)}}
6 0
3 years ago
Read 2 more answers
Question 1 of 3
Eduardwww [97]

Answer:

13 x 9 x 5

Step-by-step explanation:

because there is 13 steps in one flight and there fore we need to multiply 13 x 9

then we have to multiply the product by 5 because it is asked how many steps does she climb in five days

6 0
2 years ago
During a weekend trip, Ashley will drive a 150 miles of the 200 mile road trip, what percent of the total mile age will she driv
madreJ [45]

It is simple, you are converting 150 of 200 into a fraction and reducing it

150/200=15/20

5 goes into 20 4 times

15/20=1/4

1/4=0.75=75%

7 0
3 years ago
1.15 GPA and study hours: A survey was conducted on 193 Duke University undergraduates who took an introductory statistics cours
KonstantinChe [14]

Answer:

Step-by-step explanation:

A

According to the exercise we can say that the explanatory variable will be hours / weeks of study.

The response variable is GPA.

B

We definitely found that between the variables there is a weak or fragile relationship, neither negative nor positive nor linear.

C)

1.Observational study, since we observe that the only variables that will influence the results of the study are the observations of the students

2.No. This study is observational and its characteristics are not sufficient to conclude that studying more hours leads to obtaining a higher GPA.

8 0
3 years ago
I really think it’s B ...Help?
kvv77 [185]
The correct answer is c y-5=4(x-7)
7 0
2 years ago
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