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aev [14]
3 years ago
6

Today only a sofa is being sold at a 24% discount . The sale price is $513. What was the price yesterday?

Mathematics
1 answer:
babymother [125]3 years ago
8 0
I couldn't solve the problem.
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50 pts if you answer
andrezito [222]

Answer:

3/20

Step-by-step explanation:

Total trials: 20

Tails and 3 is denoted by 3T

No. of 3T's: 3

Experimental probability: 3/20

7 0
3 years ago
Read 2 more answers
A fair die is rolled nine times. What is the probability that
Lisa [10]

Answer:

The answer is 46/512 = 0.08984375

Step-by-step explanation:

In this question, success means to get an odd number on rolling a die.

The probability of success p = 3/6 = 1/2

So                                             p = 1/2

Now lets find probability of failure q

q = 1 - p = 1 - 1/2 = 1/2

So                                             q = 1/2

Let X  = x denotes the number of success in  n  trials.

So X  is a Binomial Random Variable

Which has the following parameters:

                                                n  = 9

as the fair die is rolled nine times and

                                                p = 1/2

Now the Probability of  x  success out of  n  trials P( X = x) is:

P(X = x) = p(x) =  nCx pˣ , qⁿ⁻ˣ , x= 0,1,2,...,9

P(X = x) = p(x) = nCx (1/2)⁹ = ₉Cₓ (1/2)⁹ = ₉Cₓ /512

Since the required probability is P (X < 3) So

P(X < 3) = P(X = 0) + P( X = 1) + P(X = 2)

             = 1 / 512 {₉C₀ + ₉C₁ + ₉C₂}                             nCr = n! / r! * (n - r)!

           

             = 1 / 512{ (9! / 0! * (9 - 0)!) + (9! / 1! * (9 - 1)!) + (9! / 2! * (9 - 2)!) }

             = 1 / 512 { 1 + 9 + 36 }

             = 46 / 512 =  0.08984375

So the required probability is 46/512

5 0
3 years ago
Someone please help??
Deffense [45]

Answer:

  see below

Step-by-step explanation:

The problem statement seems to presume you have seen an exponential function like this written as ...

  f(t) = a0·(1 +r)^t

where a0 is the value corresponding to f(0) and "r" is the fractional rate at which the value increases for each increment of t.

Here, 1+r corresponds to 1.04 in the given function, so r = 0.04 = 4%. When the value is <em>greater than 0</em>, it means there is an <em>increase</em> by that fraction each time t increases by 1.

Here, t is not defined, either, but it would usually be used to represent years in a situation like this. (In other situations, it might represent months, hours, or millenia.)

Hence, the appropriate choice is the one that describes a 4% annual increase.

5 0
3 years ago
Which system of linear inequalities is graphed?
adoni [48]

Answer:

y is greater than or equal to 3x-2

x - 1/2 is less than or equal to 2

Step-by-step explanation:

the choices aren't shown, but I answered based on the graph.

6 0
3 years ago
Read 2 more answers
If an outcome measure is normally distributed, this means that
Inessa [10]

A normally distributed result means that when the data is plotted on a graph, we can actually see a bell shaped curve. That highest frequency or peak is centered on the average value. Because it is shaped like this, we can say that:

most scores are around the average with some scores being lower or higher

5 0
3 years ago
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