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LekaFEV [45]
3 years ago
11

the telephone company offers two billing plans for local calls. Plan 1 charges $29 per month for unlimited calls and Plan 2 char

ges $19 per month plus $0.04 per call. If you have plan 2 for 4 months and make 20 calls a month, how much will your total be?
Mathematics
1 answer:
kodGreya [7K]3 years ago
4 0

Answer:

Step-by-step explanation:

Plan 2: x= number of months

y= the cost per call

19x + 0.04y

19(4) + 0.04(20)

76 + 0.8

76.8

So the total will be $76.8

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Question ^^^^^^^^^^^^^^^^6
hichkok12 [17]

Answer:

no

Step-by-step explanation:

x+14=x14

4 0
2 years ago
Read 2 more answers
Find the probability of each event.
jeka57 [31]

Using the binomial distribution, it is found that there is a 0.0108 = 1.08% probability of the coin landing tails up at least nine times.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • The coin is fair, hence p = 0.5.
  • The coin is tossed 10 times, hence n = 10.

The probability that is lands tails up at least nine times is given by:

P(X \geq 9) = P(X = 9) + P(X = 10)

In which:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 9) = C_{10,9}.(0.5)^{9}.(0.5)^{1} = 0.0098

P(X = 10) = C_{10,10}.(0.5)^{10}.(0.5)^{0} = 0.001

Hence:

P(X \geq 9) = P(X = 9) + P(X = 10) = 0.0098 + 0.001 = 0.0108

0.0108 = 1.08% probability of the coin landing tails up at least nine times.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

5 0
1 year ago
What,s the answer of _5y_25=25 ?
Ganezh [65]
The answer is that y is equal to zero

8 0
3 years ago
A necklace that is originally 24.50 is on sale for 20% off.what is the sale price of the necklace?
bearhunter [10]

Answer: $19.60

Step-by-step explanation:

24.50 x 20% or (.20)= 4.90

24.50-4.90=19.60

$19.60 is the answer

7 0
2 years ago
Read 2 more answers
You received partial credit in th
Blababa [14]

Answer:

Expected value would be $ 0.896

Step-by-step explanation:

Given,

The price of the lottery ticket = $44800000,

Also, the probability of winning the grand prize = .000000020,

Thus, the expected value of the lottery ticket = value of the lottery ticket × probability of getting the lottery ticket

= 44800000 × .000000020

= $0.896

Note : value of lottery ticket = prize amount - cost of each ticket,

Here the cost price of a ticket is not given,

That's why we did not consider it.

5 0
2 years ago
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