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
Pachacha [2.7K]
3 years ago
15

There are 10 rolls of film in a box and 3 are defective. two rolls are selected without replacement. what is the probability of

selecting a defective roll followed by another defective roll?
Mathematics
1 answer:
german3 years ago
4 0

P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9


P(1 and 2  defective) = 3/10 x 2/9  = 6/90 = 0.066

Second method using combination:
 ³C₂ / ¹⁰C₂ = 1/15 = 0.066
You might be interested in
HELP PLEASE!!! I don't have a lot of time, please help!!!
Colt1911 [192]

Answer:

Step-by-step explanation:

It is a function, since each student gets only one score one final exam,]

Domain is each student,

the first to last

Range is the score each student got:

(however the scoring was made)

f(each student) is a function because each student, or each element of the domain corresponds to the score, one and only one element of the range.

4 0
3 years ago
Expand and combine like terms: (2x^3+4x^5)^2=
marshall27 [118]

Answer:

16x^10+16x^8+4x^6

8 0
2 years ago
Which general rule maps triangle ABC into triangle A’B’C’?
Alenkasestr [34]
A sequence of transformations maps triangle ABC into triangle A’B’C
3 0
2 years ago
Given lines a, b, and c, if a⊥b and c⊥b then a⊥c. True or false
emmainna [20.7K]

Answer:

false

|___________A

|

l___________C

|

B

8 0
2 years ago
On Martin's first stroke, his golf ball traveled 4/5 of the distance to the hole. On his second stroke, the ball went into the h
pentagon [3]
If his 1st stroke went 4/5 of the way to the hole, that means the 2nd stroke was 1/5 of the distance. Since we know that the 2nd stroke was 79 meters, we can use this to find the distance from where he started...

If 1/5 = 79 meters then
4/5 = 79 × 4 = 316 meters

Since 1/5 + 4/5 = 5/5 = 1 then 79 m + 316 m = 395 meters for the total distance.

But wait! There's more. The question asks how many kilometers the hole is from where he started... there are 1000 meters per kilometer so...

395 m × 1 km/1000 m =
395/1000 m = .395 km

Total distance from start to hole is .395 km

Yay!!
4 0
3 years ago
Other questions:
  • An ant has 6 legs how many legs do 8 arts have
    14·2 answers
  • Is my answer correct? If not, please tell me the correct answer and explain. Thanks in advance!
    11·1 answer
  • assuming that each salesperson earned commission on all items he or she sold who earned the most commission​
    8·2 answers
  • The equation a2 + b2 = ca represents the relationship between the three sides of a right triangle.
    5·1 answer
  • BIBIDI BABIDI BUU I NEED SOME HELP FROM YUU
    15·2 answers
  • 182-y=226 solve for y
    8·2 answers
  • Explain how to get the answer please
    8·2 answers
  • If side 1 is 13, side 2 is 12, and side 3 is 18, can a triangle be made?
    14·1 answer
  • consider that 15(1.055)^x shows the balance in a savings account over time with no additional deposits or withdrawals. Which sta
    14·2 answers
  • Plz help with these 2 as well thx
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!