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
goldfiish [28.3K]
2 years ago
13

Round 4,574 to the nearest thousand.

Mathematics
2 answers:
crimeas [40]2 years ago
8 0

Answer:

it would be 5,000

Step-by-step explanation:

Jlenok [28]2 years ago
5 0

Answer:

5,664

Step-by-step explanation:

You might be interested in
Suppose the speeds of cars along a stretch of I-40 is normally distributed with a mean of 70 mph and standard deviation of 5 mph
neonofarm [45]

Answer:

a) 68%.

b) 84%.

c) Approximately 2.5% of cars are traveling at a speed greater than or equal to 80 mph.

d) Approximately 2.5% of cars are traveling at a speed greater than or equal to 80 mph.

e) Between 60 mph and 80 mph.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 70 mph, standard deviation of 5 mph.

(a) Approximately what percent of cars are travelling between 65 and 75 mph?

70 - 5 = 65

70 + 5 = 75

Within 1 standard deviation, so approximately 68%.

(b) If the speed limit on this stretch of highway is 65 mph, approximately what percent of cars are traveling faster than the speed limit?

The normal distribution is symmetric, which means that 50% of the measures are below the mean, and 50% are above.

65 is one standard deviation below the mean, so of the cars below the mean, 68% are above 65 mph.

0.68*50% + 50% = 34% + 50% = 84%.

84%.

(c) What percent of cars are traveling at a speed greater than or equal to 80 mph?

80 = 70 + 2*10

2 standard deviations above the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean. Due to the symmetry of the normal distribution, of the other 5%, 2.5% is at least 2 standard deviations below the mean and 2.5% is at least 2 standard deviations above the mean. Then:

Approximately 2.5% of cars are traveling at a speed greater than or equal to 80 mph.

(d) What percent of cars are traveling at a speed greater than 80 mph?

Same as item c, as in the normal distribution, the probability of an exact value is considered to be 0.

(e) 95% of cars are traveling between what two speeds?

Within two standard deviations of the mean.

70 - 2*5 = 60 mph

70 + 2*5 = 80 mph.

Between 60 mph and 80 mph.

6 0
3 years ago
The sum of two numbers is no more than 28. Let x represent the first number, and let y represent the second number. Which inequa
labwork [276]
D, because the sum is no more than 28 so it could be equal or less than.
3 0
3 years ago
Read 2 more answers
A bag contains 25 marbles;10 black,13 red,and 2 blue. A marble is drawn from the bag at random.
Deffense [45]
For the answer to the question above asking to e<span>xplain why the events "getting a black marble" and "getting a red marble" are mutually exclusive.
</span>A marble can have only one color, so you cannot choose a marble that is both black and red. Therefore the events are mutually exclusive (cannot happen simultaneously)
3 0
3 years ago
Determine the measure of an angle (in radians) that cuts off an arc length of 6.4 inches in a circle with a 6.4 inch radius.
serg [7]
1 radian
because s= r × angle measurement in radian
we have s= arc , r = radian so we got the value
5 0
3 years ago
Please help me due at 12:50. Please please please, I love you . Don’t ignore this please.
bearhunter [10]

Answer:

9/10

Step-by-step explanation:

4/10 + 2/10 + 3/10 = 9/10

4 + 2 + 3 = 9

8 0
3 years ago
Other questions:
  • A transmission is designed to last 16 years, with a standard deviation of 1.2 years. What is the probability that a transmission
    9·1 answer
  • Find the ratio and simplify. In this​ triangle, find the ratio of the shortest side to the longest. A triangle has three sides w
    10·1 answer
  • Solve for x<br> 9- 2y + 8y – 7 = -22
    13·2 answers
  • Simplify the radical - 160
    9·1 answer
  • Andy goes to Six Flags with his friends. They park 3/4 miles away from the entrance of the park. If they walk at a steady space
    10·1 answer
  • Find the equivalent exprresion of 12a + 6b
    8·2 answers
  • What is the answer to x+y=3​
    6·2 answers
  • Select all answers that apply. Wave diffraction depends on the:
    15·2 answers
  • a gardener installed 42.6 meters of fencing in a week. He installed 13.45 meters on Monday and 9.5 meters on Tuesday. He install
    14·1 answer
  • What is the ninth term in A(n)=-4 - 6(n-1)?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!