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agasfer [191]
2 years ago
14

A bag contains 8 purple marbles, 7 yellow marbles, 8 red marbles, and 3 blue marbles. What is the probability of drawing a purpl

e marble, replacing it, and then drawing a blue marble?
Mathematics
1 answer:
statuscvo [17]2 years ago
5 0

Answer:

4:26

Step-by-step explanation:

so count all of the marbles but this time you need to take away  a purple marble replace it with a blue so there would be 4 blues in the bag.

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Answer:

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3 years ago
How do you factor binomials using difference of squares?
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6 0
3 years ago
4/y+2 - 9/y-2 = 9/y^2-4
Evgesh-ka [11]
Going off the idea that this is 4/(y+2) - 9/(y-2) = 9/(y^2-4), let's first rewrite y^2-4 in the form of a^2-b^2, where a=y and b=2.
y/(y+2)-9/(y-2)=9/(y^2-2^2)
Now, use difference of squares: a^2-b^2=(a+b)(a-b)
4/(y+2)-9/(y-2)=9/((y+2)(y-2))
Multiply both sides by the Least Common Denominator: (y+2)(y-2)
4(y-2)-9(y+2)=9
Then keep on simplifying until you get your answer
-5y-26=9
-5y=9+26
-5y=35
y=35/-5
y=-7
Yay! Our answer is y=-7!
8 0
3 years ago
Read 2 more answers
Im so confused pls help
timama [110]
Answer:

a = 49°

Explanation:

You use the rule ‘exterior angle of a triangle’ which states that the exterior angle is equal to the sum of the two opposite interior angles.

To put it mathematically:

a + a = a + 49° (Ext angles of triangle)
a = a - a + 49°
a = 49°
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3 years ago
Help me please. (Algebra I)
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