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dolphi86 [110]
2 years ago
13

a certain state the license plate has two digits, then two letters, and then two digits. How many different license plates are p

ossible if letters and digits can be repeated?
Mathematics
1 answer:
Oxana [17]2 years ago
8 0

Answer:

Step-by-step explanation:

There are duplicates allowed.

10 * 10 * 26*26 *10*10 = 6760000

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a student either knows the answer or guesses. Let 3434 be the probability that he knows the answer and 1414 be the probability t
Arlecino [84]

Answer:    \dfrac{12}{13}

Step-by-step explanation:

Let A = he known the answer then A' = he guess the answer.

B = he answered it correctly

As per given , we have

P(A)=\dfrac{3}{4}\ \ ,\ \ P(A')=\dfrac{1}{4}

P(B|A)=1

P(B|A')=\dfrac{1}{4}

By Bayes theorem , we have

P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(B|A')P(A')}\\\\ P(A|B)=\dfrac{1\times\dfrac{3}{4}}{1\times\dfrac{3}{4}+\dfrac{1}{4}\times\dfrac{1}{4}}\\\\= \dfrac{12}{13}

The probability that the student knows the answer given that he answered it correctly is  \dfrac{12}{13} .

6 0
3 years ago
If the equation of a line is y= - 2/3 x - 2 at what.point on the graph would I find the y- intercept?
Aliun [14]

Answer:

(0, -2)

Step-by-step explanation:

The slope equation is written as y = mx + b where m is the slope and b is the y-intercept. In this equation the slope, which is m, is -2/3 and the y-intercept is -2, which is the value of b. So the y-intercept on the graph would be found at point (0, -2)

5 0
2 years ago
Read 2 more answers
In London, the charge of a tour bus consists of a fixed rental price plus a per kilometre rate, that depends on the distance of
ella [17]

Using a linear function, we have that:

a) The fixed cost is of $10.

b) The equation is: C = 10 + 12d.

c) The cost of an 18 km trip is $226.

d) The distance traveled is of 20 km.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this problem, the slope is of m = 12. When d = 5, C(d) = 70, hence we find the fixed cost as follows:

C(d) = 12d + b

70 = 60 + b

b = 10.

Hence the equation is:

C(d) = 12d + 10.

For a trip of 18 km, d = 18, hence the cost is:

C(12) = 12 x 18 + 10 = $226.

When the cost is of $250, the distance is found as follows:

250 = 12d + 10

12d = 240

d = 240/12

d = 20 km.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

6 0
1 year ago
Cost to store 155 mark up 30
pickupchik [31]

Answer:

  • 201.50

Step-by-step explanation:

SP = CP + markup

  • 155 + 30% =
  • 155*1.3 =
  • 201.50
5 0
2 years ago
I need help with 1 threw7​
Ksivusya [100]

Answer:

I am in middle school

Step-by-step explanation:

6 0
3 years ago
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