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
Tju [1.3M]
3 years ago
14

The weights of 12-year old boys are normally distributed with a mean of 89 lbs. If 68% of 12 year old boys are between the weigh

ts of 82.7 lbs and 95.3 lbs, what is the standard deviation?
A
34
B
6.3
C
3.5
D
12.6
Mathematics
1 answer:
cricket20 [7]3 years ago
6 0
This is the answer B. This is because if you want to be treated the way you do treat people.
You might be interested in
Suppose you have a $ 4-off coupon at a fabric store. You buy fabric that costs 7.50 per yard.Write an equation that models the t
netineya [11]
Y= (7.50x-4) ..........
7 0
3 years ago
Write in exponential form:<br><br> 5 * 5 * (-x) * (-x) * (-x) * (-x)
exis [7]

Answer:c

Step-by-step explanation:

4 0
3 years ago
A flute instructor examined student progress.he found that playing a longer song does not necessarily mean that a student will h
Sunny_sXe [5.5K]

Answer:

The flute instructor can conclude that the length of the song does not have a direct variation or correlation with the number of incorrect notes.

Step-by-step explanation:

Direct variation and correlation means that as the "x" variable increases, the "y" variable will change according to it.

If the flute instructor took numerical data, for example, made a chart, and graphed it, then he would not find a trend.

It would probably look like this (see first photo). The plotted points are all over the place. ("x" is the song length, "y" is the number of incorrect notes).

If there was a correlation, then the data would look more like a straight line (see second photo).

5 0
3 years ago
Please help!!! No links!!! Solve the system of equations below by graphing both equations with pencil and paper! What is the sol
Ber [7]
Answer is D 4,3 !!!!!!!!!!!!!!!
5 0
3 years ago
Find the distance between the two points.
Harrizon [31]
<h2>Answer</h2>

2\sqrt{10}

<h2>Explanation</h2>

1. Use Distance formula

Important to use distance formula in such problems, so keep this formula memorized for future use.

The formula to find distance amongst two points is

\sqrt{(x^2-x^1)^2 + (y^2 - y1)^2}

2. Plug in the numbers into the formula:

1 -(-1)^2 + 3 - (-3)^2

2^2=4

6^2 = 36

36 + 4 = 40

3. Find the square root of 40.

\sqrt{40}

Simplify further:

2\sqrt{10}

3 0
3 years ago
Other questions:
  • X2 + 5x - 14 Select one of the factors of the quadratic expression.
    6·1 answer
  • If an amount of $100 in a savings account increases by 10% then increases by 10% again is that the same as increasing by 20
    11·1 answer
  • 4. Find an equation for each line.
    10·1 answer
  • Which point on the number line best represents the location of root of 92.16
    6·1 answer
  • Mrs.Garrison bought 7/8 yard of fabric.She used 5/8 yard to make a skirt.How much fabric does she have left?
    8·1 answer
  • Choose each number that shows 1/2 % as an equivalent fraction, decimal, or percent. Select all that apply.
    8·2 answers
  • I need some help with this one!!!
    8·2 answers
  • Do you guys know which coordinates im supposed to graph on here?
    9·1 answer
  • Holly bought a sweater on sale for 20% off the original price. If she saved $40, what was the original price?
    12·1 answer
  • What is the slope of the line that passes through the points (10,-6) and (8, -16)?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!