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3 years ago

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A student has a one-dollar bill, a five-dollar bill, and a ten-dollar bill in a box. The student selects a bill from the box

48 times and selects the one dash dollar bill 11 times. What formula should be used to calculate the experimental probability? What is the experimental probability of selecting the one dash dollar bill? What is the theoretical probability of selecting the one dash dollar bill?

1 answer:

viva [34]3 years ago

4 0

Answer:

r/n

22.91%

33.33%

Step-by-step explanation:

To calculate the experimental probability, we must divide the number of times the event occurred by the total number of events, that is:

r / n

r = 11, n = 48

11/48 = 0.2291

In other words, the experimental probability is 22.91%

for the theoretical probability it would be the quantity that there is of that object among the total quantity of objects, in this case it would be:

1/3 = 0.3333

that is, the probability is 33.33%

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Answer:

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Customers in the "risky" category (25% of total accounts) allow their accounts to go overdue 50% of the time on average.

That means that on average, 12.5% of total accounts is overdue.

0.25*0.50 = 0.125

In the "good credit" category only 10% goes overdue. That means 7,5% of total accounts goes overdue in this category.

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4 years ago

Mr. Akika has 49 21 cent and 31 cent stamps all told. The stamps are worth $13.39. how many of each kind of stamps does he have?

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Mr Akika has 18 21-cent stamp and 31 31-cent stamp.

He has 49 21-cent and 31-cent stamps all told.

let

x = number of 21 cent stamp

y = number of 31 cent stamp

Therefore,

<h3>Total number of stamp:</h3>

x + y = 49

<h3>Total cost of stamp:</h3>

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Therefore,

x + y = 49

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2 years ago

Rachel has 60 scones. She sells them to Robbie, Cameron, Louis, Tom and

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We can start by writing all that we know about the problem. Let us write down how many scones each boy has:
$R_{o} : x$
$C_{a} : x+k$
$L_{o} : x+2k$
$T_{o} : x+3k$
$C_{h} : x+4k$
Note that k is the increase, we know it's a constant. This is not a system of equations, please keep that in mind. We will use rest of the information given to build the system. We have two variables x (the number of cookies the first boy bought) and k( the increase), that means we need to have two equations to solve this problem.
We know that total amount of scones is 60, so we can use that information to build our first equation. We sum all of the scones and we get 60.
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We know that Robbie and Cameron combined have 3/7 of <span>Louis, Tom and Charlie combined. We can use this information to build our second equation.
</span> $R_o+C_a= \frac{3}{7} (L_o+T_o+C_h)$
$2x+k= \frac{3}{7} (x+2k+x+3k+x+4k)$
$2x+k= \frac{3}{7} (3x+9k)$
$14x+7k=9x+27k$
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$x=4k$
Now this piece of information alows us to solve the first equation that we made and this will solve our problem. We simply plug in x=4k into 5x+10k=60.
$5(4k)+10k=60$
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Now we can plug this information into the same equation 5x+10k=60 and get x.
$5x+10(2)=60$
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