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
Katarina [22]
3 years ago
13

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

hts of the cars passing over the bridge are normally distributed. Use a calculator to find the probability that the weight of a randomly-selected car passing over the bridge is less than 3,000 pounds.
Mathematics
1 answer:
Annette [7]3 years ago
7 0

Answer:

0.24315

Step-by-step explanation:

Using the z score formula to solve this question

z = (x - μ) / σ,

Such that:

x = raw score

μ = population mean

σ = population standard deviation.

From the question:

x = 3000

μ = 3550

σ = 870

z = (3000 - 3550) / 870

z = -550/870

z = -0.6962

Using the z score table as well as probability calculator(as requested in the question to find the z score)

The probability of having less than 3000 is obtained as:

P(x<3000) = 0.24315

You might be interested in
Can someone help me?
svlad2 [7]

Answer:

Use Pythagorean theorem,

Hypotenuse² = base² + altitude²

= 3²+ 6²

= 9 + 36

x² = 45

x = √45

x = 6.71

Step-by-step explanation:

7 0
2 years ago
Two drivers are exploring the bottom of a trench in the Pacific Ocean. Dominic is at 175 feet below the surface of the ocean and
mestny [16]

\huge\boxed{\text{Dominic}}

In this problem, 0 represents the sea level. Since Dominic is 175 feet below the surface (sea level), his current location is at -175 feet.

The same concept can be applied to Karen, who is at -138 feet.

We need to find who is lower, or farther below 0. This means the answer is \boxed{\text{Dominic}}.

7 0
3 years ago
10.
Hatshy [7]

Answer:

15

Step-by-step explanation:

4 (Book per cost)+ 4.47 (Shipping Fee) = 8.75 cost of one book $132.75 Divided by $8.75 = 15 Books bought.

7 0
3 years ago
What does the x-intercept sometimes represent in a real world problem
UNO [17]
I think it represents where something is starting from, like something growing up (a chart with rising numbers)
3 0
3 years ago
Which is the slope of the line y=−3x+2?y=-3x+2?
Morgarella [4.7K]
The slope is -3.
Finding slope can be easy if you just remember that the formula is set up as y=mx+b.
The number in the 'm' place is always the slope.
Example: y=4x+1, the slope would be 4 because it's in the 'm' place.
If you have trouble remembering which place the slope is, trying thinking about skiing or sledding; you can only sled or ski down a Mountain slope. Mountain starts with M.
M=slope.
Hope this helps :)
If you have any questions, just let me know!
5 0
3 years ago
Other questions:
  • Evaluate 7 r − 15 s 7r− s 15 ​ 7, r, minus, start fraction, 15, divided by, s, end fraction when r = 3 r=3r, equals, 3 and s = 5
    8·1 answer
  • What is ratios and how is it solved​
    15·1 answer
  • Whats parallel to y=-3/4x-5
    8·1 answer
  • Can you tell my friend this is right so he can stop saying it is wrong
    15·1 answer
  • sandy has 200$ in her bank account if she writes 6 checks for exactly $19.18 what expression describes the change in her bank ac
    9·1 answer
  • Help me!
    12·1 answer
  • F(x) =2x-6 and g(x) = 7x +7.
    9·1 answer
  • What number is 0.79 more than 0.97
    12·1 answer
  • Please help me ASAP please
    10·1 answer
  • PLEASE HELP!! within the interval notation of [-3,-2) the function below is…
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!