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
dusya [7]
2 years ago
7

The mean score of a placement exam for entrance into a math class is​ 80, with a standard deviation of 10. Use the empirical rul

e to find the percentage of scores that lie between 60 and 80.​ (Assume the data set has a​ bell-shaped distribution.)
Mathematics
1 answer:
Sedbober [7]2 years ago
5 0

Answer:

47.5%

Step-by-step explanation:

You might be interested in
What are 1356 times 17 this is math obviously
Travka [436]

Answer:

23052

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
In a sample of 1000 U.S. adults, 198 think that most celebrities are good role models. Two U.S. adults are selected from this sa
Nezavi [6.7K]
I NEED BOINTS IM
SORRY GOOD LORD BUTTTTTTT MAYBE C
5 0
2 years ago
A pack of cards is numbered 1 to 24. A card is chosen at random. Find the probability that the number on the card is divisible b
serious [3.7K]

Answer:

Step-by-step explanation:

It's simple. So the only cards which are divisible by 2 or 3 are: 2,3,4,6,8,9,10,12,14,15,16,18,20,21,22,24. The formula of probability is P= m/n. Where m-Number of ways it can happen and n- Total number of outcomes.

Our answer is P= 16/24=2/3=66,66%

3 0
3 years ago
translate this into an expression: the quotient of a number, x, and 8, could you please explain it to me?​
Xelga [282]

Answer:

x/8

Step-by-step explanation:

First, we are given "the quotient of...". This means that we are dividing something/something else. If two numbers are given in the phrase "something and something else", the first number given will be the something, and the second number will be the something else.

The first number listed is x. Therefore, we have

x/something else.

Next, we are given "and 8", so we have x/8 as our expression

3 0
3 years ago
A jet fighter is capable of reaching speeds up to 1.5 x 10^3 miles per hour. A typical passenger plane can reach speeds of appro
Volgvan

Answer:

3 times faster

Step-by-step explanation:

\frac{1.5(10)^{3} }{5.0(10)^{2}} = \frac{1.5(10)}{5} = \frac{15}{5}  = 3 times faster

5 0
3 years ago
Other questions:
  • Write an arithmetic expression that calculates the average of 18 and 46. you may already know that: the average of two numbers i
    8·1 answer
  • Substitution 4x+6y=32. x=2y+16
    6·2 answers
  • Help me answer this question
    9·1 answer
  • ALGEBRA! NEED HELP!
    13·1 answer
  • 6- 4(2r - 5) &lt; 26 - 8r<br> This is algebra
    9·1 answer
  • $7.00 × 20 = $140 in 40 hours<br> any helps !
    10·2 answers
  • Put the following numbers in order from least to greatest: 66 1/3, 72 5/8, 203/4, 109/2
    9·1 answer
  • Profit P(x), is the difference between revenue, R(x), and cost, C(x), so P(x) = R(x) - C(x). Which expression represents P(x), i
    7·1 answer
  • 50 points find the area
    14·2 answers
  • ( a+ b) ( a- b) ( a square + 4 square )​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!