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
Katarina [22]
3 years ago
8

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without r

epeating a number. The probability that the locker code begins with a prime number is %. The probability that the last digit of the locker code is an odd number is
Mathematics
1 answer:
aliina [53]3 years ago
6 0

Answer:

Probability of a prime number = 2/5.

Probability of last number being odd = 3/5.

Step-by-step explanation:

There are 2 prime numbers (5 and 7) in the 5 numbers ( 5, 6, 7, 8, 9).

So Prob(Prime number being first) = 2/5.

There are 3 odd numbers and 2 even so:

Possible combinations of Odd (O) and Even (E) numbers with last number being Odd are:

OOO,  EEO, OEO or EOO.

Prob (OOO) = 3/5 * 1/2 * 1/3 =  3/30 = 1/10.

Prob(EEO) =  2/5 * 1/4 = 1/10.

Prob(OEO) = 3/5 * 1/2* 2/3 = 6/30 = 1/5.

Prob(EOO) = 2/5 * 3/4 * 2/3 = 12/60 = 1/5.

Therefore the probability of the last number being odd =

1/10 + 1/10 + 1/5 + 1/5

= 3/5  (answer).

You might be interested in
The marine green turtle has been known to swim 480 km (300 miles) in 10 days." How far, in kilometers, could a marine green turt
AnnyKZ [126]

Answer:

864

Step-by-step explanation:

You need to divide 480 by 10. Then multiply the answer which is 48 miles per day. Then take the 48 times 8 for the next 8 days. Then add the answer of that which is 384 and add it to 480.

Hope this helps.

7 0
3 years ago
Which ordered pair is on the graph of the function y = 8x - 1 ?
Kobotan [32]
It is b Bc if you actually look at the other one it don’t make sense
4 0
3 years ago
In a dilation with a scale factor of 3/4,the image is __________ the preimage
3241004551 [841]
I would say smaller than because you would be dilating the image by a number less than 1, which is making the image smaller.
3 0
3 years ago
Please help me!!! Alot of points!!
Dafna11 [192]
Let C represent the temperature in Celsius, and let F represent the temperature in Fahrenheit.

F=1.8C+32

Using that equation, plug in the numbers. F=1.8*25+32. F=77
4 0
3 years ago
Read 2 more answers
G(t)=2.0.4^t for t = -2​
mafiozo [28]

Answer:

2(0.4)^-2 = 12.5

Step-by-step explanation:

do math noob

7 0
2 years ago
Other questions:
  • ***Please Help***
    11·1 answer
  • Which of the following is not a type of nonfiction?
    11·2 answers
  • What is 37 divided by 748​
    10·1 answer
  • Length of a bed, using a mental benchmark, width of a door) how many yards? Need answer ASAP Thanks
    7·1 answer
  • How do you divide decimals please? for example 53.7 divided by 5.9
    5·2 answers
  • Express x^2y^2+x^2+y^2+1
    15·1 answer
  • £40,000 is invested at 8% p.a. If interest is
    15·1 answer
  • Choose an appropriate scenario for the graph below...
    10·1 answer
  • Can someone plz help me
    13·2 answers
  • 1. Glenda is buying trees to plant in her yard. One tree that normally would cost $350 is on sale for 60% off.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!