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Sedbober [7]
3 years ago
14

You randomly select 2 marbles from a mug containing 7 blue marbles, 3 red marbles, and 2 white marbles. How many times greater i

s the probability of selecting one blue marble and then one red marble when you do not replace the first marble before selecting the second marble than when you do replace the first marble before selecting the second marble? Express the answer as a fraction.
Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
8 0

Answer:

Scenario 1: w/o replacement: P(blue, then red) = (7/12)(3/11) = 7/44

Scenario 2: w/ replacement:  P(blue, then red) = (7/12)(3/12) = 7/48

Ratio of Probability #1 to Probability # 2 = 48/44 = 12/11, i.e. Prob # 1 is 1.0909... times Prob # 2

Step-by-step explanation:

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What is the quotient (3x^2+8x-3)/ (x+3)
Dvinal [7]

Answer:

The quotient ix 3x - 1.

Explanation:

Use Long division:

        3x - 1     <------------quotient.

        ---------------------

x + 3) 3x^2 + 8x + 3

         3x^2 + 9x

          -------------

                      -x + 3

                      -x - 3

                        ------

                             6 <---------remainder.

6 0
2 years ago
If BD and EG are parallel lines and mBCF = 50°, what is mEFH?<br> Look at this diagram:
Burka [1]
It’s hard to tell due to no labels, but these are your angles due to the equal angles theorem and a few other theorems. Hopefully with this image you can hopefully find your answer. You may need to add angles together depending on what you are looking for. And possible even figure out what angle measure would make a (180 degree) triangle.
Hope this helped

4 0
2 years ago
Seth buys last year's best-selling novel, in hardcover, for $17.85 $⁢17.85 . This is with a 15% 15% discount from the original p
Troyanec [42]

$21.00

let the original price = 100%

then the discount price = 100 - 15 = 85%

divide $17.85 by 85 to obtain 1% then multiply by 100 to obtain original price.

original price = $17.85 × \frac{100}{85} = $21


8 0
3 years ago
Read 2 more answers
Expand the following.<br> (3x + 2)2<br> A.9x2+6x+4<br> B.9x2+4<br> C.3x2+4<br> E.9x2+12x+4
PolarNik [594]

Step-by-step explanation:

E

working ;

(3x+2)^2

*Apply Perfect Square Formula : (a+b) =a^2+2ab+b^2

a = 3x,b = 2

(3x)^2 + 3x.2+2^2

finally Answer is:

= 9x^2 + 12x +4

5 0
2 years ago
Which numbers have the same absolute value? Choose all that apply. ASAP
Vitek1552 [10]
I'm not sure which numbers you are referring to, but 3 has the same absolute value as -3, and 7 has the same absolute value as -7, just for an example.
3 0
2 years ago
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