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
natali 33 [55]
3 years ago
9

For women at hartford college, times to run 400 meters are normally distributed with a mean of 84 seconds and a standard deviati

on of 7 seconds. what percentage of the times are more than 91 seconds? more than 63 seconds?
Mathematics
1 answer:
pashok25 [27]3 years ago
4 0


z=(63-84)/3= -21/7= -3
P(x>63)=p(z > -3) = .9987 or 99.87%
You might be interested in
The total age of diana, carmen , and andrew is 45. diana is 21,and andrew is twice as old as carmen. how old is andrew
MissTica
Diana's age=21 years
Carmen's age=x years
Andrew's age=2x years
21+x+2x=45
21+3x=45
3x=45-21
3x=24
x=24/3
x=8
2x8=16
Carmen is 8 years old and Andrew is 16 years old. Hoped that helps:)
8 0
2 years ago
A Carpenter who is installing cabinets uses thin pieces of material called shims to fill gaps. the carpenter uses four shims to
daser333 [38]

Answer: .235


Step-by-step explanation:

Total Distance - Shim 1 - Shim 2 - Shim 3 = Shim4

1.2 cm - 0.75 cm - 0.125 - 0.09 cm = 0.235 cm

4 0
2 years ago
Find the error<br> 3(x+2) + 3x = 36<br> 3x + 6 + 3x = 36<br> 6x + 6 = 36<br> 6x = 42<br> x = 7
rusak2 [61]
Answer: 6x=42

Explanation: After the step 6x+6=36, it’ll equal 6x=30 because when you subtract the 6 on both sides, it’ll equal 30, revealing it’s actually 6x=30, with the conclusion of x=5.
3 0
3 years ago
I Need help
Ivan

Answer:

1.) Verbal Expression: m is less than 4

2.) 4th or s ≤ 30

3.) Verbal Expression: q is not equal to 3

Hope this helps!

3 0
2 years ago
What it is the equivalent of 7:2<br>​
Law Incorporation [45]

Answer:

7:2

7/2

Step-by-step explanation:

7:2 is also equivalent to 7/2

4 0
2 years ago
Other questions:
  • Substitution method <br> Y=0.2+2200<br> Y=-x+5500
    6·1 answer
  • Is this right or wrong
    14·1 answer
  • Please help me out with this problem!
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%20%5Csqrt%7B8x%20%2B%2012%20%2B%204%20%3D%2010%7D%20" id="TexFormula1" title=" \sqrt{8x +
    10·1 answer
  • What is the slope of the line on the graph?
    6·1 answer
  • A central angle in a circle has a measure of 180°. The length of the arc it intercepts is 8 in.
    10·1 answer
  • (5)
    13·1 answer
  • What is 83 + 119 + 17 =
    13·2 answers
  • A chemist is studying dissolved gases in the ocean. She graphs her data as shown below.
    12·1 answer
  • 2/3 x + 5/6 = x - 1/2<br><br><br><br><br> SHOW WORK PLEASE
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!