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Aloiza [94]
2 years ago
9

Emma has 7 pens in a box. 5 of the pens are blue. 2 of the pens are red. emma takes at random a pen from the box and writes down

its colour. emma puts the pen back in the box. then emma takes at random a second pen from the box, and writes down its colour.
Mathematics
1 answer:
alexandr402 [8]2 years ago
3 0

Answer:

There is no question stated.  If one assume the question is "Does the probability of picking the same color pen change after the first try?," the answer is "No."

Step-by-step explanation:

When the pen is replaced, the probability reverts back to the original value:

There are 7 pens:

5 Blue

2 Red

The probability of picking a red or blue pen on the first try is:

Red = 2/7

Blue = 5/7

When the pen is replaced, the probabilities  return to the original values.

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5+-4*1/3<br><br> Show work pls
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4 0
3 years ago
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7 0
3 years ago
What is the nth term to this sequence 18,16,14,12
densk [106]

What is the nth term to this sequence 18,16,14,12 ?

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6 0
3 years ago
Read 2 more answers
50 POINTS! I MARK BRAINLEST AND SAY THANKS!
Phantasy [73]
Y *x =20

y +x =9

rewrite 1st eq. as y = 20/x

subsituute that into 2nd eq.

20/x +x =9

multiply each term by X

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x^2 - 9x +20 = 0

now factor:

(x-5) (x-4) = 0

solve for x
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replace x into equations and solve for Y

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x= 5,4
y = 4,5



5 0
3 years ago
Read 2 more answers
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