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
nika2105 [10]
2 years ago
15

A teacher designs a test so a student who studies will pass94% of the time, but a student who does not studywill pass14% of the

time. A certain student studies for91% of the tests taken. On a given test, what is theprobability that student passes
Mathematics
1 answer:
nignag [31]2 years ago
5 0

Answer:

0.868 = 86.8% probability that the student passes.

Step-by-step explanation:

Probability of the student passing:

94% of 91%(when the student studies for the test).

14% of 100 - 91 = 9%(when the student does not study for the test). So

p = 0.94*0.91 + 0.14*0.09 = 0.868

0.868 = 86.8% probability that the student passes.

You might be interested in
Imani's rent increased from $560 per month to $600 per month. Her friend, Ariana, had her rent increase
Kipish [7]

Answer:

Imani's rent had a higher percent increase

Step-by-step explanation:

A change from 560 to 600 represents a positive change (increase) of 7.1428571429%

A change from 825 to 875 represents a positive change (increase) of 6.0606060606%

Percent change = New - Old /825 × 100

3 0
1 year ago
What is the solution to this system of equations? y = x - 20 x + y = 84
Pepsi [2]

Answer:

(52, 32 )

Step-by-step explanation:

Given the 2 equations

y = x - 20 → (1)

x + y = 84 → (2)

Substitute y = x - 20 into (2)

x + x - 20 = 84, that is

2x - 20 = 84 ( add 20 to both sides )

2x = 104 ( divide both sides by 2 )

x = 52

Substitute x = 52 into (1) for corresponding value of y

y = 52 - 20 = 32

Solution is (52, 32 )

3 0
3 years ago
Christy dove to a depth of 12 feet below the surface of the water write the depth as an integer
Varvara68 [4.7K]

If we use the surface of the water as our frame of reference, then Christy's vertical position could be represented by -12 ft.

4 0
3 years ago
What is the factored form of x^3 - x^2 - 30x?
9966 [12]

Answer:

x(x − 6) (x + 5)

Step-by-step explanation:

this is the factored form of x^3 - x^2 - 30x

hope this helps and is right :)

3 0
2 years ago
Which must be true?
dezoksy [38]

Answer:

i think its  C

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone please help me find the area of some of these?
    12·1 answer
  • HELP PLEASE!!! Thanks!
    7·1 answer
  • Please help i wanna move to the next grade,10 points
    11·1 answer
  • Write the equation of the graphed line in y = mx + b form
    11·1 answer
  • How do you write 22.128 in expanded fraction form and decimal form
    9·2 answers
  • Math help pls, thank u
    6·2 answers
  • Find the values of a and b such that x² - 4x+9 = (x+a)² + b
    15·1 answer
  • I need to know about the gradient
    5·1 answer
  • What is everyones favorite UNDERTALE character
    12·2 answers
  • Out of the total respondents, the percentage of respondents from the 46–55 age group who rated the film excellent is %. write yo
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!