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Natasha_Volkova [10]
3 years ago
8

Suppose a bag contains 7 blue chips and 3 gold chips. What is the probability of randomly choosing a gold chip, not replacing it

, and then randomly choosing another gold chip?
A. 7 over 30
B. 1 over 15
C. 1 over 30
D. 7 over 15
Mathematics
1 answer:
lbvjy [14]3 years ago
3 0
For the answer to the question above asking w<span>hat is the probability of randomly choosing a gold chip, not replacing it, and then randomly choosing another gold chip? The answer to this question is the third one among the choices which is c. 1 over 30.
I hope this helped</span>
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kkurt [141]

Answer:5+4 = 9

Step-by-step explanation:

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If 5y = 6x + 16 and 9x = 7y-20, what is the value of 3x - 2y?
Law Incorporation [45]

The value of 3x-2y is -4. From the equation 5y=6x=16 and 9x=7y-20 the values of (x,y) is (4,8).

Step-by-step explanation:

        The given equations are,

                 5y=6x+16.......................(1)

                 9x=7y-20......................(2)

                3x-2y...............................(3)

Step:1

    Modify the equations (1) and (2) in (x+y=constant) format,

                6x-5y=-16.....................(4)

                9x-7y=-20....................(5)

Step:2

     Equation (4) is multiplied by 7     ( ∵ 7×Eqn(4))

                42x-35y=-112..............(6)

Step:3

     Equation (5) is multiplied by 5     (∵ 5×Eqn(5))

               45x-35y=-100.............(7)

Step:4

    Subtracting Equation (6) and (7)

               42x-35y=-112

              45x-35y=-100

    ( - )

     (42x-45x)+(35y-35y)=(100-112)

     (-3x)+(0)=(-12)

    x=4

Step:5

    Substitute X value in Equation (1),

             5y=6x+16...................(1)

     where, x=4,

             5y= (6×4)+16

             5y=40

            y= 8

Step: 6

      Check for solution, substitute x and y values in equation (2).

                9x=7y-20.......................(2)

               (9×4)=(7×8)-20

              36=36

Step:7

      From given, 3x-2y

      where, X=4 and y=8

              3x-2y = (3×4)-(2×8)

                        = 12-16

            3x-2y = -4

Result:

      The value for 3x-2y is -4. The values of (x,y) are (4,8).

   

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3 years ago
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tangare [24]

Answer: 177.5


Step-by-step explanation:so to find to area u need to multiply 16 times 16,which gives u a area of 256. Now to find to Area of circle u need to do 5*5 becuse 5 is the radius,and that is 25. 25*3.14=78.5. So we need to subtract 256-78.5=177.5.


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kirza4 [7]

Answer:

it is letter B

Step-by-step explanation:

hope it helps you

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