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]
3 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]3 years ago
5 0

Answer:

47.5%

Step-by-step explanation:

You might be interested in
A car rental company rents cars for x dollars per day plus y dollars for each mile driven. Carlos rented a car for 4 days, drove
topjm [15]

Answer:

x = $20/day, y = $0.35/mile

Step-by-step explanation:

x = $/day, y = $/mile

4x + 160y = 136

1x + 240y = 104

You can solve by elimination or substitution.

4 0
3 years ago
Match the expressions with rational exponents to their simplified forms.
Misha Larkins [42]

do it yourself

Step-by-step explanation:

6 0
3 years ago
How are real numbers used to describe a real-world situations
avanturin [10]
Real numbers are all rational numbers such as -7 and 4/3 and all irrational numbers. Real numbers are mainly used in counting and also in measurement which is used a lot in real world situations. These numbers help is quantify in the real world.
Hope this helps! Can you give me a brainliest please? I need them badly !
3 0
3 years ago
Is 42% bigger than 0.44
nlexa [21]

Answer: No

0.44 is equal to 44%.

42% is equal to 0.42.

0.44 is greater than 0.44.

44% is greater than 42%.

Answer = no

5 0
3 years ago
2.6 less than the product of 4 and a number z
Alexandra [31]
I think The answer is B
3 0
3 years ago
Read 2 more answers
Other questions:
  • A yard of fabric cost $12.99. How much will 3.4 pounds cost
    15·1 answer
  • During February, Kevin will water has ivy every third day, and water his cactus every fifth day. On which date will Kevin first
    15·1 answer
  • In 2003 the population of Africa was about 7.7 million people which is 2million more than 3 times the population in 1950
    15·1 answer
  • -2 (x-3) + 4 x - 6 need the answer soon
    8·1 answer
  • Solve for x: 5 − (x + 5) > −2(x + 4)
    7·2 answers
  • Select the correct answer.
    15·2 answers
  • What is the slope between the points (5,-7) and (-7,1)?
    7·1 answer
  • Please help i need the answer and how you got it!
    11·1 answer
  • The number 414,940 is divisible by?
    12·1 answer
  • I was confuse on number 5, 6, 7, 8.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!