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n200080 [17]
3 years ago
11

The number of chips of different colors in Vicky's bag is shown below: 5 blue chips 11 pink chips 9 white chips Vicky takes out

a chip from the bag randomly without looking. She replaces the chip and then takes out another chip from the bag. What is the probability that Vicky takes out a blue chip in both draws?
Mathematics
1 answer:
Alinara [238K]3 years ago
3 0

Answer:

Hence, the probability is:

\dfrac{1}{25}

Step-by-step explanation:

The number of chips of different colors in Vicky's bag is shown below:

5 blue chips   11 pink chips       9 white chips.

The total number of chips in Vicky's bag are: 25

( since, 5+11+9=25 chips)

Also,

the choosing of the chip is done on the basis of replacement.

This means when one chip is drawn it is put back into the bag and then the other chip is drawn.

Let P denote the probability of an event.

This means that:

P(Blue)=5/25

( Since there are 5 blue chips out of 25 chips)

As the drawing of chip in first draw is independent of the second draw.

Hence, the probability that Vicky takes out a blue chip in both draws is calculated as:

P(Choosing\ Blue\ in\ both\ draw)=P(Blue)\times P(Blue)\\\\P(Choosing\ Blue\ in\ both\ draw)=\dfrac{5}{25}\times \dfrac{5}{25}\\\\P(Choosing\ Blue\ in\ both\ draw)=\dfrac{1}{25}

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Rom4ik [11]
Please:  Use "^" to denote exponentiation:  <span>2x^2 + 8x - 12 = 0

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Here a=1, b=4 and c = -6.  Square half of b, obtaining (4/2)^2 = 4, and add, and then subtract, this 4 to x^2 + 4x - 6:

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(x+2)^2 = 10.  Take the sqrt of both sides:   x+2 = plus or minus sqrt(10).

Finally, solve for x:  x = -2 plus or minus sqrt(10).



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3 years ago
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almond37 [142]
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a shop sell 200 chocolate ; vanilla and strawberry ice cream 45% of the ice cream sold are vanilla and 35% are strawberry. how m
Oksanka [162]

The number of chocolate ice creams sold is 50.

<h3>How many chocolate ice creams are sold?​</h3>

There exist three kinds of flavors.

45% of the ice creams exist as vanilla

30% of the ice creams exist as strawberry

x percent of the ice creams exist chocolate

The total amount of ice cream exists 200 which equals 100%.

Therefore,

45% + 30% + x = 100%

To estimate the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to estimate the result.

Solving for x, then the value of x is,

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Then the number of chocolate ice creams are:

25%(200) = 50.

The number of chocolate ice creams sold is 50.

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Write the simplified expression: 2x + 3(x - 2) - 3(x -6)
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Answer:

2x+12

Step-by-step explanation:

2x+3(x−2)−3(x−6)

Distribute:

=2x+(3)(x)+(3)(−2)+(−3)(x)+(−3)(−6)

=2x+3x+−6+−3x+18

Combine Like Terms:

=2x+3x+−6+−3x+18

=(2x+3x+−3x)+(−6+18)

=2x+12

Answer:

=2x+12

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Answer:

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3/10×100

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