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
stich3 [128]
2 years ago
7

The weights of cars passing over a bridge have a mean of 3,550 pounds and

Mathematics
1 answer:
Dovator [93]2 years ago
6 0

The approximate probability that the weight of a randomly-selected car passing over the bridge is more than 4,000 pounds is 69%

Option C is the correct answer.

<h3>What is Probability ?</h3>

Probability is defined as the study of likeliness of an event to happen.

It has a range of 0 to 1.

It is given in the question that

The weights of cars passing over a bridge have a mean of 3,550 pounds and standard deviation of 870 pounds.

mean  = 3550

standard deviation,  = 870

Observed value, X = 4000

Z = (X-mean)/standard deviation = (4000-3550)/870 = 0.517

Probability of weight above 4000 lb

= P(X>4000) = P(z>Z) = P(z> 0.517) = 0.6985

The approximate probability that the weight of a randomly-selected car passing over the bridge is more than 4,000 pounds is 69%

To know more about Probability

brainly.com/question/11234923

#SPJ1

You might be interested in
I need help fast will give brainless
Kay [80]

Answer:

n=3

Step-by-step explanation:

Operation used is division

8 0
3 years ago
Read 2 more answers
How do perform the equation x-(4x-2y)-5y
cluponka [151]

Answer:

-3x - 7y

Step-by-step explanation:

x - (4x - 2y) - 5y

x - 4x - 2y - 5y

Combine like terms

x - 4x = -3x

-2y - 5y = -7y

Now, we have our final answer:

-3x - 7y

7 0
2 years ago
If an impulse travels 100 m/s, about how long will it take the impulse to travel 10 meters?
PtichkaEL [24]

Answer:

0.1 seconds

Step-by-step explanation:

10/100=0.1

6 0
3 years ago
Read 2 more answers
What’s the x for 0=2x+15x-13
Colt1911 [192]
Add 13 to both sides
13 = 2x + 15x
Simplify right side
13 = 17x
Divide through by 17
13/17 = x
4 0
2 years ago
James has dimes and quarters saved up in his change jar. He has a total of 162 coins totaling $31.20. James has dimes
SashulF [63]

The question is incomplete:

James has dimes and quarters saved up in his change jar. He has a total of 162 coins totaling $31.20 what is the total amount james has in quarters?

a. $10.00

b. $6.20

c.$15.50

d.$25.00

Answer:

d.$25.00

Step-by-step explanation:

With the information provided, you can write the following equations given that dimes are equal to 0.10 and quarters to 0.25 to determine the number of dimes and quarters that James has:

x+y=162 (1)

0.10x+0.25y=31.20 (2), where:

x is the number of dimes

y is the number of quarters

First, you can solve for x in (1):

x=162-y (3)

Then, you have to replace (3) in (2) and solve for y:

0.10(162-y)+0.25y=31.20

16.2-0.10y+0.25y=31.20

0.15y=31.20-16.2

0.15y=15

y=15/0.15

y=100

Finally, you have to replace the value of y in (3) to find x:

x=162-100

x=62

Now, you know that James has 100 quarters and you can multiply this number for the value of a quarter to find the amount James has in quarters:

100*0.25=25

According to this, the answer is that James has $25 in quarters.

4 0
3 years ago
Other questions:
  • if 4 men and 1 dog can dig 12 holes in 4 days, and 2 men and 1 dog can dig 4 holes in 2 days, how long will it take 1 man and 2
    13·1 answer
  • What is the value of x?<br><br> Enter your answer in the box.<br><br> X = ___ cm
    8·1 answer
  • What is the relationship between the 4s in the number 4498
    14·2 answers
  • Using the remainder theorem, which is not a factor of <img src="https://tex.z-dn.net/?f=x%5E4-3x%5E3-17x%5E2%2B39x-20%3F" id="Te
    7·1 answer
  • The water level of a lake rose by 1 2/3 in. during a 3 1/3 week-long wet spell. Simplify the complex
    9·1 answer
  • The number of players in a tennis tournament is reduced by half (50%) after every round. In round 1 there are 256 player, in rou
    12·1 answer
  • Please tell me which is least to greatest. Thanks
    10·2 answers
  • (-2,17)(-1,13)(1,5)(2,1)(3,-3)<br> The rate of change is ____.
    9·1 answer
  • Convert pounds to ounces (1 pound = 16 ounces). 14 pounds =
    15·1 answer
  • 40 points please help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!