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V125BC [204]
3 years ago
11

Lana has a bowl of marbles the bowl contains 5 green marbles,3 red marbles and 2 blue marbles from the bowl one at a time. What

is the probability that lana will select a green marble first, replace the marble, then select a red marble
Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

3/20

Step-by-step explanation:

5 green marbles,3 red marbles and 2 blue marbles from the bowl = 10 marbles

P( green) = green/total = 5/10 = 1/2

Replace

5 green marbles,3 red marbles and 2 blue marbles from the bowl = 10 marbles

P( red) = red/total = 3/10

P(green,replace, red) = 1/2 * 3/10 = 3/20

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10-4 is equivelnt to 4-10
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3 years ago
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I need to know what this answer is<br><br><br>3. Write the expression 175 using radicals. ​
Rus_ich [418]

Answer:

5√7

Step-by-step explanation:

What we want to do is first just put the 175 in a sqrt like this:

√175

Next we do prime factorisation to try and simplify further.

         175

      /          \

   25            7

  /     \

5         5

We can figure out that this out √5^2 times 7

we can cancel the sqrt and the squared and simplify to 5√7

So there is your answer, 5√7.

If you have any questions feel free to ask. Also for the prime factorisation the formatting may be off, sorry for the inconvenience and have a good day!

5 0
2 years ago
A number p plus 7 is greater than 24
hichkok12 [17]

Answer:

p is greater than or equal to 18

Step-by-step explanation:

18+7=25 so therefore p can be any number greater than 18 since it will be over 24

4 0
4 years ago
PQ:QR is 5:2 and PR=42 find PQ and QR​
kicyunya [14]

Answer:

there is a math caulator

Step-by-step explanation:

6 0
3 years ago
there are 49 dogs signed up for the dog show. there are 36 more small dogs than large dogs. how many small dogs are signed up fo
pogonyaev
Okay, so total dogs are 49.
So we know if x=large dogs and y=small dogs, then x+y=49.
Next we are told that there are 36 MORE small dogs than large dogs. We can take that more meaning addition, and x being our value for large dogs. So y=x+36.
After that we now know what value we can plug in for y. So x+x+36=49.
We can then simplify it to 2x+36=49.
Subtracting the 36 from both sides, leaves you with 2x=13.
Followed by dividing both sides by 2, gives you x=6.5. Or 6.5 large dogs.
Now we can plug this into our formula for the small dogs (y=x+36) to give us y=6.5+36, which simplifies to y=42.5. Or 42.5 small dogs. Which is our answer.
We can double check it by adding the small and large dogs together, 6.5+42.5, which gives us 49, our total entries.
4 0
4 years ago
Read 2 more answers
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