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EleoNora [17]
2 years ago
4

Amy and Simon bought a pair of shorts and some T-shirts. Each pair of shorts cost the same amount,and each T-shirt cost the same

.
•Amy paid $60 for 1 pair of shorts and 2 T-shirts

•Simon paid $75 for 1 pair of shorts and 3 T-shirts

What was the cost in dollars, of 1 pair of shorts
Mathematics
2 answers:
aksik [14]2 years ago
8 0

Answer:

Cost of 1 pair of shorts was $30.

Step-by-step explanation:

Amy and Simon bought a pair of shorts and some T-shirts.

Amy paid $60 for 1 pair of shorts and 2 T-shirts

Simon paid $75 for 1 pair of shorts and 3 T-shirts

When we subtract  $60 from $75 = $15

Now we got the price of 1 T-shirt = $15

Cost of 2 T-shirts that Amy paid  = 15 × 2 = $30

1 pair of shorts = total cost - cost of 2 T-shirts

Cost of  1 pair of shorts = 60 - 30 = $30

Simon paid also paid for 1 pair of shorts and 3 T-shirts

30 + (3 × 15) = $75

Cost of 1 pair of shorts was $30

wariber [46]2 years ago
7 0

Answer: $30

Step-by-step explanation: Let shorts be represented by "x" and shirts by "y." you would then set up the equation as "x+2y=60" and "x+3y=75 then solve by eliminating the x's and leaving the y's. Whatever you get for "y," plug it in for "y" in one of the equations, and solve for "x."

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Answer:

A) The probability is a measure of the likelihood than an event is going to occur. In this case we can calculate the probability of X as:

P(X) = X/N where X is the number of ways X occurs and N is the total number of events.

P(E) = E/N = 1033/2851 = 0.3623

P(R) = R/N = 854/2851 = 0.2995

P(D) = D/N = 964/2851 = 0.3381

B)

E and D are mutually exclusive because the students that were admitted early where not deffered to regular admission pool. There is no chance that there is a student that were admitted erarly and deffered at the same time, so the intersection between E and D (E∩D) is 0.

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D)

In this case we can reformulate the question as: What is the probability of being accepted if you apply for early admission? This

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P(DA) = 174/2831 = 0.0610

The probability of ramdomly selecting a students that has been early accepted or deffered and then accepted is going to be:

P(E or DA) = 0.0610 + 0.3623 = 0.4233

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2 years ago
At a recent job fair, Intel boasted that they paid master's graduates more than 90% of all
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Complete Question

A recent study found that hourly wages earned by employees possessing a master's degree are distributed normally with a mean of $27.50 and standard deviation of $3.50

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Answer:

The value is x  =  \$31.986

Step-by-step explanation:

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This z-score can be mathematically represented as

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2 years ago
15) Bob has 12 black pen, 14 red pen, 15 green pens, 24 blue pens and 3 boxes of
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Answer:

13, 16, 18

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Sabemos que podemos calcular el total de plumas amarillos, por medio de la media.

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112 = 65 + x + y + z

x + y + z = 112-65

x + y + z = 47

sabemos que la mediana es el valor medio, y que ese 46 debe dividirse entre 3 valores porque son 3 cajas, entonces debemos buscar los números adecuados para el valor 15 esté en la mitad, es decir de cuarto.

Sin meter los valores nuevos, el ranking sería así:

12

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X

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16 + 18 = 34

x = 47-34 = 13

quedaría:

12

13

14

15

dieciséis

18 años

24

Si recalculamos la media:

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3.52 A coin is tossed twice. Let Z denote the number of heads on the first toss and W the total number of heads on the 2 tosses.
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Answer:

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Step-by-step explanation:

Number of head on first toss = Z

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P ( head ) = 2/5 ,    P( tail ) = 3/5

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P( W = 1 | Z = 0 ) = 0           P( W = 2 | Z = 1 ) = 0.4

The joint probability distribution

P(0,0) = 0.36, P(1,0) = 0.24,   P(2,0) = 0,   P(0,1) = 0,  P(1,1) = 0.24,  P(2,1)= 0.16

<u>B) Marginal distribution of W</u>

P( W = 0 ) = 0.36,    P(W = 1 ) = 0.48,  P(W = 2 ) = 0.16

<u>C) Marginal distribution of Z ( pmf of Z )</u>

P ( z = 0 ) = 0.6

P ( z = 1 ) = 0.4

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2 years ago
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