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
olchik [2.2K]
2 years ago
5

What is the elapsed time between 8:00 a.m and noon ?

Mathematics
2 answers:
nikitadnepr [17]2 years ago
7 0
4 hours because noon is 12. 8-12 is 4
andriy [413]2 years ago
6 0

Answer:

Four Hours

Step-by-step explanation:

Noon is equivalent to 12:00pm

This is how I would usually do that in my head and counting on my fingers:

8am to 9am is one hour.

9am to 10 am is one hour.

10am to 11am is one hour.

11am to 12pm is one hour.

Add those hours together and you get four hours.

Alternatively, 12-8=4 so four hours.

You might be interested in
What value of z makes this equation true?
Ymorist [56]

Answer:

B. 66

Step-by-step explanation:

73+25 = 98

Z = 98-32

Z = 66

5 0
3 years ago
Opening day at the new york state fair in 2012 had an attendence of 46,753. Dicide which place value to round 46,753 to if you w
Nutka1998 [239]
Dik butter lol this is fun I am getting points for these answers
7 0
3 years ago
I need help on B and C. Not sure how I can solve those. Can someone please help me out here? Thank you for your help!
Valentin [98]

Nice job with part A on getting those correct answers.

====================================================

Part B

  • mu = mean = 43
  • sigma = standard deviation = 3

Let's calculate the z score for the raw score x = 37

z = (x - mu)/sigma

z = (37 - 43)/3

z = -6/3

z = -2

A negative z score tells us we're below the mean. Specifically, we are exactly 2 standard deviations under the mean.

If you repeat those steps for x = 46 (not changing mu or sigma), then you should get z = 1. So we're now 1 standard deviation above the mean.

Ultimately, we want to know the area under the standard normal curve (aka z curve) from z = -2 to z = 1.

Refer to the chart below which is a breakdown of the Empirical Rule. The pink areas are within 1 standard deviation of the mean. We have two regions taking up roughly 34% of the full area under the curve, so they combine to 34+34 = 68%

Then we add on another 13.5% which is the blue area on the left (between z = -2 and z = -1)

So 13.5+68 = 81.5% of the area under the curve is between z = -2 and z = 1.

<h3>Answer: 81.5</h3>

Note: the percent sign is already taken care of for us, so there's no need to type it in. But the answer above of course means 81.5% and that answer is approximate.

====================================================

Part C

Let's find the z score for x = 34. The values of mu and sigma are the same as before.

z = (x - mu)/sigma

z = (34-43)/3

z = -9/3

z = -3

So computing P(X > 34) is the same as P(Z > -3)

Notice how adding up all of the values in the chart mentioned gets us:

2.35+13.5+34+34+13.5+2.35 = 99.7

which means 99.7% of the distribution is within 3 standard deviations of the mean. The remaining 100% - 99.7% = 0.3% is the combined area of both tails. So each tail is (0.3%)/2 = 0.15%

In short, 0.15% of the area under the curve is to the left of z = -3

Therefore, 100% - 0.15% = 99.85% of the widgets are going to have z values larger than -3, which in turn means they have values larger than 34.

<h3>Answer: 99.85</h3>

Again you don't have to worry about the percent sign. Like before, the answer is approximate.

5 0
3 years ago
Cho 4 điểm ABCD thỏa mãn điều kiện AB//CD; AD//BC. Gọi P và Q lần lượt là trung điểm của DC và BC. Gọi M là trung điểm của AB. G
lina2011 [118]

Answer:

i dont even know this language

Step-by-step explanation:

4 0
3 years ago
Cheyanne plans to put $150 into a savings account. She can place her money into an account represented by f(x) = 5x+150, or into
stepan [7]
In order to calculate the amount, we simply substitute the number of years into x in both equations.
After 3 years:
f(3) = 5(3) + 150
= $165
g(3) = 150 * 1.03⁽³⁾
= $163.90
After 10 years:
f(10) = 5(10) + 150
= $200
g(10) = 150 * 1.03⁽¹⁰⁾
= $201.59
After three years, the first account has more money but after ten years, the second account has more money.
4 0
3 years ago
Other questions:
  • A sales representative was paid a base salary of $77 per week. He was also paid a commission of 11 percent on everything he sold
    14·1 answer
  • Victor Malaba has a net income of $1.240 per month if he spends $150 on food . $244 on a car payment $300 on rent and $50 on sav
    14·1 answer
  • Use the points A(2,3) abd B (2,-3) to find length
    14·1 answer
  • What is the volume of a Peerman with a base area of 8 ft.² and a height of 12 feet
    6·1 answer
  • NEED HELP ASAP!! You are watching Jude copy an angle. He adjusts the width of his compass each time he draws an arc. Explain wha
    13·2 answers
  • Consider the function given by the graph. What are these values?
    15·2 answers
  • Solve for y if B=<br> a(c+y)<br> 5
    5·1 answer
  • Write the equation of the quadratic whose Vertex is at ( −4,−5) and passes through the point (−3, −7)
    14·1 answer
  • Mrs. Randall bakes a peach pie. The diameter of the pie is 9 inches. If Mrs. Randall cuts the pie into 6 pieces, what will be th
    6·1 answer
  • Which of the following is not necessarily true?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!