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
velikii [3]
3 years ago
5

Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 230 tests, how many s

tudents score above 96?
A. about 31 students
B.about 14 students C.about 6 students D.about 2 students
Mathematics
1 answer:
sergeinik [125]3 years ago
5 0
C) about 6 students, This is because each standard deviation is 10 so two deviations up = 96, meaning that 2.3% of the people scored above and 2.3% times 230 people is 5.29, so about 6 students.
You might be interested in
Find The Solution set and draw a number line of each quad inequality
Firdavs [7]

Answer:

                 i do not know

Step-by-step explanation:

5 0
3 years ago
A vat with 700 gallons of beer contains 4% alcohol (by volume). Beer with 6% alcohol is pumped into the vat at a rate of 7 gal/m
dolphi86 [110]

Answer:

5.2%.

Step-by-step explanation:

After 1 hour (60 / 100) * 700 = 420 gallons of beer have been exchanged.

So we have 420 gallons of 6%  and 280 gallons of 4% after 1 hour.

So the strength at that time =  (420* 6) + 280*4) / 700

= 5.2%.

6 0
3 years ago
Inqualtites question<br><br>Complete the inequality expression that describes this set of numbers:
RideAnS [48]

Answer:

- 3 ≤ x < 0

Step-by-step explanation:

- 3 is included in the set thus x can equal - 3

- 3 is less than all other values in the set including the largest value of 0, thus

- 3 ≤ x < 0

3 0
3 years ago
Write a function for the line with a slope -1/4 that passes through the point (4,5)
Lilit [14]

Answer: The point slope solution is y+4 = -(1/2)(x-4) which is y + 4 = -(.5)x + 2 or y = -(.5)x -2.

Step-by-step explanation:

5 0
2 years ago
Jim is M years old. His daughter is 21 years yonger than him. How old is Jim's daughter. Express your answer in terms of M.
Gre4nikov [31]

Answer: M - 21


Step-by-step explanation:

Since his daughter is 21 years younger than he is (M) all you have to do is take his age and subtract 21 (how many years older he is) to get her age.


At first this might seem difficult because you don't know what M is equal to but in the context of this question you don't need to know M.

If you're ever stuck just give an imaginary number to M such as 50.

If you take 50 and subtract 21 you get 29, this makes sense because his daughter is of course younger than him.

You can also use this tatic to solve problems like x+3=x/2 (or something like that) just to check and make sure that the two equations do equal each other.

:)

5 0
3 years ago
Other questions:
  • jill bought a cd for $1000 that earns 4.2% apr and is compounded monthly. The cd matures in 2 years. How much will this cd be wo
    10·2 answers
  • Help please logarithms​
    8·1 answer
  • What is the length, width, and area
    15·1 answer
  • jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equa
    11·1 answer
  • A Parachutes speed during a freefall reaches 108 mph. What is the speed in feet per second? At this speed, how many feet with a
    5·1 answer
  • 0.782 ___ 0.784<br> I Need HElP NOW!
    6·2 answers
  • GIVING BRAINLY 100 PTS
    5·1 answer
  • 61-2xl-9+41-2y + 6)..<br> Simplify
    12·2 answers
  • HELLLPPPP!!!!!!!!!!!!!! I WILL MAKE YOU BRAINLIEST!!!!!!!!!! PLEASE HELP ME!!!
    15·2 answers
  • I need help please, super confused
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!