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
3241004551 [841]
3 years ago
15

A box contains five keys, only one of which will open a lock. keys are randomly selected and tried, one at a time, until the loc

k is opened (keys that do not work are discarded before another is tried). let y be the number of the trial on which the lock is opened
Mathematics
1 answer:
alukav5142 [94]3 years ago
4 0
Each key is 1/5 the way for the door to be open
You might be interested in
You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find t
iogann1982 [59]

Answer:

P(2 quarters) = 19/ (13*16) = 19/208  = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

ok

first draw:  there are 20 quarters to choose from

second draw: there are 19 quarters left to choose

so Total coins are 65 coins

P(2 quarters) = P( 1st quarter)* P(2nd quarter)

P(2 quarters) =  20/65   *   (19/64)

P(2 quarters) = 4/13 *  19/64

P(2 quarters) = 19/ (13*16) = 19/208

4 0
3 years ago
(03.01)<br> The domain of the following relation R {(3,-2), (1, 2), (-1,-4), (-1, 2)} is
Anna35 [415]

The domain is set of x-value.

Therefore, the domain of the relation Domain of R = {3,1,-1}

6 0
3 years ago
What is 10÷5/8 in a math order.
Sedbober [7]
If you would like to calculate <span>10÷5/8, you can do this using the following steps:

</span><span>10÷5/8 = (10/5)/8 = 2/8 = 1/4 = 0.25

The correct result would be 1/4 or 0.25.</span>
3 0
4 years ago
6 + (9 − 1) 2 ÷ 4 ⋅ 1 over 2 whole to the power of 4
Bas_tet [7]

Answer:

625

Step-by-step explanation:

1. parenthesis first, so it simplifies to ((6+(8)2÷4*1)/2)^4

2. pemdas says that multiplication and division go before addition and subtraction, so ((6+(8)2÷4*1)/2)^4 becomes ((6+16÷4*1)/2)^4 ---> ((6+4)/2)^4

3. then simplify inside of the parenthesis, so it becomes 5^4, which is 625

6 0
3 years ago
If f(x)=-4x+1 what is f(-x/2)
guapka [62]

Answer:

f(\frac{-x}{2})=2x+1

Step-by-step explanation:

given f(x)=-4x+1................(1)

x=\frac{-x}{2}  put in equ (1)

f(x)=-4x+1

f(\frac{-x}{2} )  =-4(\frac{-x}{2})+1

 f(\frac{-x}{2})=2x+1 answer

5 0
3 years ago
Other questions:
  • What is 9 to the 3 halfs power
    9·2 answers
  • Of the 95 people enrolled in mathematics class, 93% are present. How many are present?
    15·1 answer
  • Help meh plz plz quickly
    8·1 answer
  • Ana participated in a charity walk. She raised $0.25 for each 1/2 mile that she walked.The first day Ana walked 11 miles.The sec
    15·2 answers
  • A car is 180 inches long.A truck is 75% longer than the car.<br> How long is the truck?
    15·1 answer
  • Someone please help me with this!!! thank you!! (link)
    10·2 answers
  • CAN ANYONE HELP ME THAT IS GOOD IN MATH
    12·1 answer
  • Round 25395 nearest hundred​
    12·2 answers
  • when solving the following system of equations by substitution what would be a correct first step x=y–7 3x+15y=-1
    7·1 answer
  • An object is moving to the right. Instead, you want it to move up (but not in a diagonal). In what direction (directions) should
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!