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
neonofarm [45]
3 years ago
14

20. Based on student records, 25% of the students at a large high school have a

Mathematics
2 answers:
yarga [219]3 years ago
7 0

Answer:

(E) 0.71

Step-by-step explanation:

P(not GPA > 3.5 and Not AP) = 1 – P(GPA > 3.5 or AP) = 1 – (0.25 + 0.16 – 0.12) = 0.71.

Elenna [48]3 years ago
5 0

Answer:

(E) 0.71

Step-by-step explanation:

Let's call A the event that a student has GPA of 3.5 or better, A' the event that a student has GPA lower than 3.5, B the event that a student is enrolled in at least one AP class and B' the event that a student is not taking any AP class.

So, the  probability that the student has a GPA lower than 3.5 and is not taking any AP  classes is calculated as:

P(A'∩B') = 1 - P(A∪B)

it means that the students that have a GPA lower than 3.5 and are not taking any AP  classes are the complement of the students that have a GPA of 3.5 of better or are enrolled in at least one AP class.

Therefore, P(A∪B) is equal to:

P(A∪B) = P(A) + P(B) - P(A∩B)

Where the probability P(A) that a student has GPA of 3.5 or better is 0.25, the probability P(B) that a student is enrolled in at least one AP class is 0.16 and the probability P(A∩B) that a student has a GPA of 3.5 or better and is enrolled  in at least one AP class is 0.12

So, P(A∪B) is equal to:

P(A∪B) = P(A) + P(B) - P(A∩B)

P(A∪B) = 0.25 + 0.16 - 0.12

P(A∪B) = 0.29

Finally, P(A'∩B') is equal to:

P(A'∩B') = 1 - P(A∪B)

P(A'∩B') = 1 - 0.29

P(A'∩B') = 0.71

You might be interested in
Correct answer gets brainliest
jok3333 [9.3K]
The answer will be C.) 70 square feet

7 0
4 years ago
Read 2 more answers
reorder the numbers and combine like terms to simplify 4.5+2 1/2 +6.0-5 1/2 is it A. -7.5 B. 7 C.7.5 or D.8.5​
DerKrebs [107]

Answer:

I believe its C

Step-by-step explanation:

I added them up lol

6 0
3 years ago
Read 2 more answers
7. (2x - 1)2 = 31 – 2x<br> solve by factoring
dolphi86 [110]

Answer:

21 i dont kmow

Step-by-step explanation:

5 0
3 years ago
Four cookies and three cupcakes code $13.25. Five cookies and two cupcakes cost $11.75. Give the system of equations that could
Kaylis [27]

Answer:

  • cookie: $1.25
  • cupcake: $2.75

Step-by-step explanation:

Let x and y represent the cost of a cookie and a cupcake, respectively.

  4x +3y = 13.25

  5x +2y = 11.75 . . . . . . the system of equations

___

By Cramer's rule:

  x = (3(11.75) -2(13.25))/(3(5) -2(4)) = 8.75/7 = 1.25

  y = (13.25(5) -11.75(4))/7 = 19.25/7 = 2.75

The cost of one cookie is $1.25; the cost of one cupcake is $2.75.

_____

Cramer's rule gives the solution to the system of equations ...

  ax +by =c

  dx +ey = f

as ...

  ∆ = bd -ea

  x = (bf -ec)/∆

  y = (cd -fa)/∆

7 0
3 years ago
Three and two forths - one and two thirds = <br> 3 2/4 - 1 2/3 =
soldier1979 [14.2K]

Answer:

1.83333333333

Step-by-step explanation:

pls mark me brainliest

ok thanks :) :) :) :)

8 0
3 years ago
Other questions:
  • Solve for b : 1/2b+G=D
    8·1 answer
  • ABCD is a parallelogram. What are the measures of angles B and C? b=(3n+20) D= (6n-25)
    15·1 answer
  • Hi guys, need help for question 3 please!!! Struggling so much
    10·1 answer
  • What’s 10% of 120 please answer
    12·2 answers
  • A scout troop is collecting aluminum cans to raise money. They have collected 150 lbs. of aluminum for which they can get 80 cen
    10·1 answer
  • Carl is boarding a plane.
    14·1 answer
  • taro has marbles whose total mass is 24 grams if each marble has a mass of about 1.5 grams how many marbles does taro have
    9·2 answers
  • At a yoga club, the number of boys to girls was 2:5. If there are 15 more girls, how many boys are there?
    9·1 answer
  • What is 9/4 in decimal form
    5·1 answer
  • Given ΔABC ≅ ΔDEF. Determine the measure of angle C.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!