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timama [110]
3 years ago
7

Xavier and Bobby each receive a salary check every week. They combine their checks in one account. After 1 week, the balance in

their account is $50. After 2 weeks, the balance in their account is $100. Which line, on the coordinate grid, correctly shows the amount of money Xavier and Bobby have combined as it changes over time? Line A Line B Line C
Mathematics
1 answer:
Radda [10]3 years ago
7 0

Answer: It goes from 0 Plus 50 in the first week then the second week another 50 is added to the fifty dollars Xavier and Bobby had the previous week to get a hundred dollars after two weeks.

Step-by-step explanation:

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Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it
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Answer:

\dfrac{9}{25}

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}

Now, the <em>required probability</em> can be found as:

P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }

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