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
forsale [732]
2 years ago
9

Plz someone help me I just guessed but what's the real answer, I need this asap​

Mathematics
1 answer:
sladkih [1.3K]2 years ago
6 0

Answer: Honestly it has to be B dont see how the others come into play

Step-by-step explanation:

You might be interested in
In a certain city district the need for money to buy drugs is stated as the reason for 70% of all thefts. Find the probability t
torisob [31]

Answer:

9.72% probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

Step-by-step explanation:

For each theft, there are only two possible outcomes. Either the need to buy drugs is the reason of the theft, or it is not. Each theft is independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In a certain city district the need for money to buy drugs is stated as the reason for 70% of all thefts.

This means that p = 0.7

Find the probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

This is P(X = 3) when n = 7. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{7,3}.(0.7)^{3}.(0.3)^{4} = 0.0972

9.72% probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

5 0
2 years ago
Jenn buys 4 balls of yarn for a total of $23.78. She pays with two $20 bills. What is her change?
tamaranim1 [39]
Her change will be $16.22 since 20 +20 is 40 and 40 - 23.78 is 16.22
3 0
3 years ago
Read 2 more answers
What is the length of line segment PQ?<br><br> 4 units<br> 5 units<br> 6 units<br> 9 units
makkiz [27]
Hello! 

I was looking for this answer as well, but I took the quiz and got it correct. The answer is 5 units. 

good luck! 
3 0
3 years ago
Read 2 more answers
A blueprint for a house states that 2.5 inches equal 10 feet. If the length of a wall is 12 feet how many inches is the wall in
Xelga [282]
If 10 feet = 2.5 inches
then 1 feet = 2.5/10 = 0.25
therefore 12 feet = 3 inches

In short the answer is 3 inches on the blueprint
4 0
3 years ago
A group of scientists wants to investigate if they can predict the life expectancy
Brrunno [24]

Step-by-step explanation:

There is no question asked here, bit of course it is possible to predict the life expectancies of a lot of things. This takes patience, resistance, and persistence, because working on something that takes time without persistence would result in a painful waste of time.

To predict the life expectancy of an effect is to predict how long it is going to take before it goes extinct, or seize from existence.

6 0
3 years ago
Other questions:
  • Given f (x) = 4x^4 – 15 and 9 (x) = 2x + 11<br> (gof)(x)
    7·1 answer
  • There is a large group of people entering the building. After 2 minutes, 55 people have entered the building, so after 30 minute
    8·1 answer
  • Need help quick ASAP!!!!
    10·1 answer
  • A balloon is 4 ft above the ground. It is released and floats up 3 ft
    13·1 answer
  • Which number is located at the point Q on the number line?
    12·1 answer
  • suppose a triangle has two sides lengths of 32 and 35 and that angle bewteen these two sides is 120. What is the side length of
    10·1 answer
  • Plsss Help Urgent!!! Which point represents the person who practiced the most and got the fastest time in a swim meet?
    13·1 answer
  • An airplane travels at a speed of 960 km/h how for can it travel in 1 hour
    15·1 answer
  • Four adult alligators weigh 1,812 kilograms. If each alligator weighs the same, how many kilograms does one alligator weigh?
    13·1 answer
  • Help pls!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!