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
Amiraneli [1.4K]
3 years ago
14

A lock has two digit numeric code, with the numbers 1 through 7 available for each digit of the code. Note that numbers can be r

epeated in the code so there are 7 possibilities for each two digits. Find the total number of possible codes for the lock.
Mathematics
1 answer:
lubasha [3.4K]3 years ago
7 0
If there is 2 digits and 7 numbers the combos would be:
1,1 2,1 3,1 4,1 5,1 6,1 7,1
1,2 2,2 3,2 4,2 5,2 6,2 7,2
1,3 2,3 3,3 4,3 5,3 6,3 7,3
1,4 2,4 3,4 4,4 5,4 6,4 7,4
1,5 2,5 3,5 4,5 5,5 6,5 7,5
1,6 2,6 3,6 4,6 5,6 6,6 7,6
1,7 2,7 3,7 4,7 5,7 6,7 7,7

Therefore there are 49 possible combinations :)
You might be interested in
The volume of water remaining in a hot tub when it is being drained satisfies the differential equation dV/dt = −3(V)^1/2 , wher
dimaraw [331]
The given function is a variable separable differential equation. Combine like terms, integrate, apply the appropriate limits, and express V in terms of t. This is done as follows:

dV/dt = -3(V)^1/2
dV/-3V^1/2 = dt
\int\limits^V_m { \frac{1}{03 \sqrt{V} } } \, dV = \int\limits^t_0 {} \, dt

m here is the initial V which is 225. Then after integrating,

-2/3 (√V - √225) = t
-2/3 (√V - 15) = t

V= \sqrt{ \frac{-3}{2}t+15 }

That is the expression for V at time t. I hope I was able to help. Have a good day.
5 0
3 years ago
Can you please tell me the table of 12?
zloy xaker [14]

Answer:

you have the table of the 12in the photo

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
21.12 is what percent of 82.5 ?
Tanya [424]
21.12 is 25.6% of 82.5. I hope this helps. :)
5 0
4 years ago
Hi I need help on this question I’m struggling May someone help me pls and thank u it’s urgent!!!!
kiruha [24]
I believe you’re correct.

y = 3x - 6
8 0
3 years ago
When a product of integers has an odd number of negative factors, then sign of the product is?
Phoenix [80]

Answer:

<em>The product of an even number of negatives give us a positive number. An odd number of - 1's gives us a negative one, -1. This can be applied to any set of products. The product of an odd number of negatives give us a negative number. </em>

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • An airplane pilot can see the top of a traffic control tower at a 20 degree angle of depression. the airplane is 5,000 feet away
    14·2 answers
  • An auditorium has three levels. Level 1 seats 3,577 people, Level 2 seats 5,214 people, and Level 3 seats 5,879 people. How many
    12·1 answer
  • What is the value of the expression when n=7
    7·2 answers
  • Find the probability of rolling factors of 3
    10·1 answer
  • Suppose that for each firm in the competitive market for potatoes, long-run average cost is minimized at $0.6 per pound when 150
    6·1 answer
  • Tell me what should I do​
    5·1 answer
  • Write the equation of a line in standard form that has x-intercept (P,0) and y-intercept (0,R).
    8·1 answer
  • The height of a man is 1.7 m what is this height in centimeter
    10·1 answer
  • A coach travels to the beach which is 576 KM away in 6 hours. If he is only allowed to travel at a maximum speed of 90 kph, did
    7·1 answer
  • the perimeter of a triangle is 41x. if the length of two sides are 18x and 7x, find the length of the third side in terms of x.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!