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
Westkost [7]
3 years ago
11

Can someone please help me with this!

Mathematics
2 answers:
Virty [35]3 years ago
5 0
The answer for number 3 is 3.c
lyudmila [28]3 years ago
4 0
The answer for 2 is 32
You might be interested in
5. (MGSE9-12.A.CED.2, MGSE9-12.F.BF.1) Which equation is equivalent to f(x) =
Greeley [361]
The answer to the problem is C
4 0
2 years ago
What is the sine of C if triangle ABC has b = 3, c = 7, and angle B = 15°?
MatroZZZ [7]
0.6039 is the answer. please give me brainiest.
7 0
3 years ago
Read 2 more answers
Please help it is due in 10 minutes​
Otrada [13]

Answer:

1.  X= 4

2.  X= 1

3. X= 3

4. X= 5

5. X= 7

6. X= -3/4

7. X= 6

8. X= 5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Jane must get at least three of the four problems on the exam correct to get an A. She has been able to do 80% of the problems o
NISA [10]

Answer:

a) There is n 81.92% probability that she gets an A.

b) If she gets the first problem correct, there is an 89.6% probability that she gets an A.

Step-by-step explanation:

For each question, there are only two possible outcomes. Either the answer is correct, or it is not. This means that we can solve this problem using binomial distribution probability concepts.

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}.\pi^{x}.(1-\pi)^{n-x}

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

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

And \pi is the probability of X happening.

For this problem, we have that:

The probability she gets any problem correct is 0.8, so \pi = 0.8.

(a) What is the probability she gets an A?

There are four problems, so n = 4

Jane must get at least three of the four problems on the exam correct to get an A.

So, we need to find P(X \geq 3)

P(X \geq 3) = P(X = 3) + P(X = 4)

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

P(X = 3) = C_{4,3}.(0.80)^{3}.(0.2)^{1} = 0.4096

P(X = 4) = C_{4,4}.(0.80)^{4}.(0.2)^{0} = 0.4096

P(X \geq 3) = P(X = 3) + P(X = 4) = 2*0.4096 = 0.8192

There is n 81.92% probability that she gets an A.

(b) If she gets the first problem correct, what is the probability she gets an A?

Now, there are only 3 problems left, so n = 3

To get an A, she must get at least 2 of them right, since one(the first one) she has already got it correct.

So, we need to find P(X \geq 2)

P(X \geq 3) = P(X = 2) + P(X = 3)

P(X = 2) = C_{3,2}.(0.80)^{2}.(0.2)^{1} = 0.384

P(X = 4) = C_{3,3}.(0.80)^{3}.(0.2)^{0} = 0.512

P(X \geq 3) = P(X = 2) + P(X = 3) = 0.384 + 0.512 = 0.896

If she gets the first problem correct, there is an 89.6% probability that she gets an A.

3 0
3 years ago
BEST ANSWER the brainliest! This is for my test!
Fantom [35]

Answer:

15.4 m

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • (2x2 + 7x) + (2y2 + 6y) = (2y2 + 6y) + (2x2 + 7x)<br> ✓ commutative property<br> What is the answer
    6·1 answer
  • A straight rod has one end at the origin and the other end at the point (l,0) and a linear density given by λ=ax2, where a is a
    15·1 answer
  • A dice is rolled 50 times.
    5·2 answers
  • (2.5 times 10^-10) (7 times 10^-6)
    10·2 answers
  • a statue on honor Benjamin Franklin will be placed outside the entrance to the Liberty Bell Exhibit Hall in Philadelphia the des
    6·1 answer
  • Which has the greatest absolute value?<br> a. -15<br> b. 25<br> c. -40<br> d. 10
    7·1 answer
  • One math problem. Having trouble, could somebody help
    6·1 answer
  • |2x-1|=2 find the value of x
    12·1 answer
  • Question 1-3 please!<br> Answers AND explanation :D
    13·1 answer
  • Please help me I don’t understand this
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!