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zhannawk [14.2K]
3 years ago
8

Simplify the expression below -4× -(-)

Mathematics
1 answer:
alex41 [277]3 years ago
3 0

-4x+1

that is the answer

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A medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A to
timofeeve [1]

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}

4 0
3 years ago
SONGS
adelina 88 [10]

Answer:

Step-by-step explanation:

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8 0
2 years ago
PLEASE HELP!!!!!!!
crimeas [40]

Answer:

24.5

Step-by-step explanation:

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7 0
2 years ago
what is the volume, in cubic centimeters, of a cylinder with a height of 12 cm and a base radius of 6 cm, to the nearest tenths
mars1129 [50]

Answer:

Step-by-step explanation:

V = πr²h = π·6²·12 = 432π ≅ 1,357.2 cm³

6 0
2 years ago
diana and sujit clean home for a summer job. they charge $70 for the job plus 5% for supplies. a homeowner gave them a 15% tip.
LekaFEV [45]
70*1.05*1.15=84.52
84.52<85
no, they did not recieve more than $85
8 0
3 years ago
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