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
Ira Lisetskai [31]
3 years ago
15

A medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A to

tal of 389 older Americans who lived at home and were in good health were studied over a three-year period. While all of the 389 people took in at least 700 milligrams of calcium and 200 units of vitamin D through their normal diet, 187 of them were given additional supplements containing 500 milligrams of calcium citrate and 70 units of vitamin D daily. Of the 187 who took additional supplements, 11 of them suffered broken bones over the three-year period. Of the 202 older Americans who did not take the additional supplement, 26 of them suffered broken bones over the study period.
What fraction of older Americans who were included in the study suffered broken bones during the three-year period?

a.
26/202

b.
37/389

c.
26/389

d.
11/187

e.
11/389
Mathematics
1 answer:
timofeeve [1]3 years ago
4 0

Answer:

\frac{37}{389}

Step-by-step explanation:

Given that a  medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A total of 389 older Americans who lived at home and were in good health were studied over a three-year period. While all of the 389 people took in at least 700 milligrams of calcium and 200 units of vitamin D through their normal diet, 187 of them were given additional supplements containing 500 milligrams of calcium citrate and 70 units of vitamin D daily. Of the 187 who took additional supplements, 11 of them suffered broken bones over the three-year period. Of the 202 older Americans who did not take the additional supplement, 26 of them suffered broken bones over the study period.

                     Group I           Group II           Total

n                      187                  202                389

favour x             11                    26                  37

The fraction of older Americans who were included in the study suffered broken bones during the three-year period

=Total x/total n

= \frac{37}{389}

You might be interested in
Evaluate 5k + 1 when: *
wlad13 [49]

1

k^2 = 4k

k = 0, k = 4

#2

k^2 - 5k = k + 7

k^2 - 6k = 7

k^2 - 6k + 9 = 16

k - 3 = 4 ⇒ k = 7

k - 3 = -4 ⇒ k = -1

#3

k^3 - 5k^2 + 3k = -k

k^3 - 5k^2 + 4k = 0

k(k^2 - 5k + 4) = 0

k = 0, k = 1, k = 4

#4

|k + 1| + 2 = 8

|k + 1| = 6

k = 5, k = -7

5 0
3 years ago
OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- PLSS TELL ME WHA
Amanda [17]

Answer:

Fraction :

\frac{4}{8}

No. of parts shaded : 4

Total No. of Equal parts : 8

Draw this :-

(in the picture)

5 0
2 years ago
Read 2 more answers
Solve:<br> 4 + x - 17 = 22
romanna [79]

Answer:

x=35

Step-by-step explanation:

4+x-17=22

x+4-17=22

x-13=22

x-13+13=22+13

4 0
3 years ago
Read 2 more answers
A right rectangular prism has a length of 8 centimeters, a width of 3 centimeters, and a height of 5 centimeters. What is the su
ladessa [460]

Answer: 158cm^2

Step-by-step explanation:

You can use the following formula to calculate the surface area of the right rectangular prism:

SA = 2(wl +lh + hw)

Where "w" is the width, "l" is the length, and "h" is the height.

Knowing that this rigth rectangular prism  has a length of 8 centimeters, a width of 3 centimeters and a height of 5 centimeters, you can substitute these values into the formula.

Then, the surface of the right rectangular prism is:

SA = 2[(3cm*8cm) + (8cm*5cm) + (5cm*3cm)]\\\\SA=158cm^2

4 0
3 years ago
Read 2 more answers
Anya recorded the height in inches of 10 students in her class. The results are shown below.
Juliette [100K]
D, add all your answers than divide by how many numbers there are
8 0
2 years ago
Read 2 more answers
Other questions:
  • If two lines intersect, they intersect at two different points. is the statement sometimes, always, or never true.
    5·1 answer
  • Gwendoline has 17 tonnes of jam. She give exactly one-sixth to lucinda.
    11·1 answer
  • Consider the liner equation y+4x=27 solve for y and rewrite the equation in the slope intercept form
    11·1 answer
  • If arc XY= 78 miles and measure of arc XY=70º then what is the radius of the circle?
    7·1 answer
  • What is the answer for -3y+12=-48-3y+12=-48
    8·1 answer
  • The winter group provides tax advice
    13·1 answer
  • The equation (x + 11)^2 + (y – 27)^2 = 2.25, with units in yards, represents a circular fountain in a park. The park entrance ma
    15·2 answers
  • What dose -0.1c = -10 equal
    10·1 answer
  • A toll-free consumer information line answered 105 of
    9·1 answer
  • E=4i+3j A=5i finfd E.A=EAcos
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!