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gizmo_the_mogwai [7]
3 years ago
15

Alexis wants to buy $500 worth of new clothes before school starts. She decides to have a garage sale to earn the money for the

clothes. She hopes to sell her comic book collection for $200, stuffed toys for $100, a bicycle for $50, and a few knicknacks from her room for $250. The probabilities that her neighbors want to buy the stuff Alexis is selling are distributed as shown in the table. P(X) Probability Comics Toys Bikes Knicknacks What is Alexis's expected garage sale income, and how much more would she need to earn to break even?
Mathematics
1 answer:
Digiron [165]3 years ago
4 0
Answer choices given?
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What is the zeros of the quadratic function y=x^2+14x+24
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Step-by-step explanation:

{x}^{2}  + 14x + 24 = 0 \\  {x}^{2}  + 12x + 2x + 24 = 0 \\ x(x + 12) + 2(x + 12) = 0 \\ (x + 12)(x + 2)  = 0\\ x =  - 12 \\ x =  - 2

6 0
3 years ago
A square has an area of 9yd^2. What is the length of each side?
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Answer: The side length is 3 yards.

Step-by-step explanation:

To find the area of a square, you have to square one of it's side lengths since they all share the same length.  Since we know the area, and we need to find the side length so we just need to find the square root of the area.

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2 years ago
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Answer:

60 seconds.  

Step-by-step explanation:  

We have been given that Maria train can go around the track in 10 seconds. Alma train can go around the track in 12 seconds.

To find the number of seconds after which both trains will cross the finish line together the first time we will find LCM of 10 and 12. LCM will give us the smallest positive integer that is divisible by both 10 and 12.  

Multiples of 10 are: 10, 20, 30, 40, 50, 60, 70,...    

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We can see that least common multiple of 10 and 12 is 60, therefore, it will take 60 seconds for both trains to cross the finish line together the first time.

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3 years ago
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