1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kobotan [32]
3 years ago
9

An access code consists of of a letter followed by four digits. Any letter can be used, the first digit cannot be 0, and the las

t digit must be even. (a) Find the number of possible access codes. (b) What is the probability of randomly electing the correct access code on the first try? (c) what is the probability of not selecting the right access code on the first try?
Mathematics
1 answer:
scoundrel [369]3 years ago
4 0

Answer:

(a)117000  (b)1/117000 (c)116999/117000

Step-by-step explanation:

(a)There are 26 letters, hence <u>26</u> options for the first character

There are <u>9</u> options for the second character, because, you can place 1,2,3,4,5,6,7,8,or 9.

For the third character you can have <u>10</u> options, since, you can 1 through 9 and 0.

The 4th one has <u>10</u> options too since the same terminology is used for the 3rd digit as the 4th one.

For the last digit, You have <u>5</u> options,0,  2, 4, 6, and 8.

Hence, the answer is 26*9*10*10*5 = <u>117000</u>

(b)There is only 1 correct code, so the chance of getting it right is <u>1/117000</u>.

(c)There are 117000-1 ways oh getting it wrong, so <u>116999/117000.</u>

You might be interested in
How to solve for x and steps on how to do that with the final answer
Maurinko [17]
25/10= 2.5

So, we know that the larger triangle is bigger than the smaller one by a dilation of 2.5. 

14*2.5= 35

x= 35

I hope this helps!
~kaikers
6 0
2 years ago
There are 5 times as many yellow labs as terriers in the dog park .if there are a total of 18 dogs how many dogs are terriers?
tekilochka [14]
Let t = number of terriers
1 x t = number of total terriers
5 x t = number of yellow labs
1t + 5t = 6t
6t = total number of dogs in the park
6t = 18
t = 18/6
t = 3
there are 3 terriers
8 0
3 years ago
Aisha is n years old.
jeka57 [31]

Answer:

Step-by-step explanation:

n x 5

3 0
1 year ago
Subtract-2x^2-6x+10 from -2x +9
sesenic [268]

Answer:

-4x0 -6x -1

Step-by-step explanation:

I believe its true.

8 0
1 year ago
Write the formula for a function d(x) that describes the distance between the point P and a point (x,y) on the line. You final a
vlabodo [156]

Answer:

d(x) = √[(x - 2)² + (3x - 1)²]

Step-by-step explanation:

The distance between two points with coordinates (x₁, y₁) and (x₂, y₂) is given as

d = √[(x₂ - x₁)² + (y₂ - y₁)²]

So, the distance between point (2,0) and a point (x,y)

d = √[(x - 2)² + (y - 0)²]

d = √[(x - 2)² + (y)²]

But the point (x,y) is on the line y = 3x - 1

We can substitute for y in the distance between points equation.

d(x) = √[(x - 2)² + (3x - 1)²]

QED!

6 0
3 years ago
Other questions:
  • [HELP ASAP] Triangle angles:
    14·1 answer
  • What’s the slope of this line?
    10·1 answer
  • A college's tuition has risen 5% each year since 2015. If the tuition in 2015 was $10,850, predict the cost of tuition for this
    15·1 answer
  • A student wants to conduct an investigation to find out how much heat energy a 100-gram rock can transfer to water. He has the r
    11·1 answer
  • Select the graph of the quadratic function. f(x)=1/4x^2
    10·1 answer
  • How do i <br> Evaluate 4!.
    9·1 answer
  • A rectangle has a perimeter of 35.8 inches and a base of 12.6 inches. What is the height?
    5·2 answers
  • Table below shows the number of miles run each day of the week. Which list shows the number of miles
    9·2 answers
  • Simplify (3^-2/3•3^1/3)^-1 using rational exponents
    11·1 answer
  • The PTO is selling raffle tickets to raise money for classroom supplies. A raffle ticket costs $2. There is 1 winning ticket out
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!