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
Aneli [31]
3 years ago
6

PLSSSSSSSS HELPPPPPPPPPPPP

Mathematics
1 answer:
klasskru [66]3 years ago
8 0

Answer: 23

Step-by-step explanation:

The answer is not actually 23. Hope that helps!

You might be interested in
Need help with math problem
Nikolay [14]
10 (1/2) = 5

hope this helps
4 0
3 years ago
Read 2 more answers
In answering a question on a multiple-choice test, a student either knows the correct answer or guesses it. Let 0.7 be the proba
Dahasolnce [82]

Answer:

The probability is 0.9211

Step-by-step explanation:

Let's call K the event that the student know the answer, G the event that the student guess the answer and C the event that the answer is correct.

So, the probability P(K/C) that a student knows the answer to a question, given that she answered it correctly is:

P(K/C)=P(K∩C)/P(C)

Where P(C) = P(K∩C) + P(G∩C)

Then, the probability P(K∩C) that the student know the answer and it is correct is:

P(K∩C) = 0.7

On the other hand, the probability P(G∩C) that the student guess the answer and it is correct is:

P(G∩C) = 0.3*0.2 = 0.06

Because, 0.3 is the probability that the student guess the answer and 0.2 is the probability that the answer is correct given that the student guess the answer.

Therefore, The probability P(C) that the answer is correct is:

P(C) = 0.7 + 0.06 = 0.76

Finally, P(K/C) is:

P(K/C) = 0.7/0.76 = 0.9211

7 0
3 years ago
Derek runs 4 laps around the track. If each lap around the track is 0.25 miles long, and he starts and stops in the same locatio
Alex
The answer is B) 0 miles. Because displacement is the shortest distance between starting point and ending point. Since, his starting point and ending point is the same, hence, his displacement is 0 miles.
8 0
3 years ago
Which operation can be used with the augmented matrix below?
ycow [4]

Answer:

Multiply row 2 by-1 and add it to row 3.

Step-by-step explanation:

The given augmented matrix is \left[\begin{array}{ccc}3&-21&15\\15&8&15\\-2&-1&3\end{array}\right]

The permissible row operations are:

1. Switching rows

2. Multiplying a row by a nonzero constant.

3. Adding/Subtracting two rows

 Therefore the correct option is: Multiply row 2 by-1 and add it to row 3.

5 0
3 years ago
The merry-go-round in the elementary playground can hold no more than 12 students at a time. Write the inequality for this scena
gulaghasi [49]
If x=students, the equation would be x=12 (x is less than of equal to twelve). I don’t know what you mean by constraints; perhaps if you explain more, I could help?
3 0
3 years ago
Other questions:
  • Malcolm bought 6 bowls for $13.20. What is the unit rate?
    13·2 answers
  • What is the measure of jk
    11·1 answer
  • Factor this polynomial completely over the set of complex numbers: f(x)=x^3-x^2-4x+4 Pleaseee answer asap! Thanks!
    7·2 answers
  • Please answer this correctly
    10·2 answers
  • Please help!!! How many coefficients does this polynomial have in its complete form, including any missing terms?
    15·1 answer
  • A local city collects 8% sales tax. If the total purchase was $216.00, then how much was collected for sales tax?
    7·1 answer
  • The Mallards pay their two quarterbacks $7.2 million and $1.4 million. If the team salary is $33 million a year and their budget
    14·2 answers
  • SOMEONE PLSSSS TELL HOWWWWWW
    12·2 answers
  • By rounding to 1 significant figure, estimate<br> 0.48 X 1594.3
    15·1 answer
  • What is the y intercept of 2x - y = -1
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!