Five factors that should be controlled are the dose of the medicine, the time the patients take this medicine, their diet, the stage of this disease and medicine composition.
<h3>Why should some factors be controlled?</h3>
This is done to avoid bias or imprecise results.
<h3>What factors should be controlled?</h3>
Factors related to the medicine itself and factors that can affect the results should be controlled. This includes:
- The dose given to the patients.
- The stage of the disease that should be similar for all patients.
- The medicine compositon and manufacturer.
- The number of day patients take the medicine.
- The patients' diet.
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You would multiply the sales regular price by the percent and then subtract your answer from the regular sale price. For example, if something cost $499 and the sales price was 15% off, you would multiply 499 by 0.15 and then you would get 74.85. You would then subtract the 74.89 from the original price which was $499 and you would get $424.11 which would be your new price with the discount.
It is 2,3,4,5 there are all of your answere
Step-by-step explanation:
(i) 2x = 5
compare with ax+by+c = 0
→ 2x + 0.y - 5 = 0
» a = 2 ,b = 0 ,c = -5
(ii) y - 2 = 0
compare with ax + by + c = 0
→ 0.x + 1y -2 = 0
» a = 0 , b = 1 , c = -2
(iii) y/7 = 3
y = 3×7
y = 21
y - 21 = 0
compare with ax + by + c = 0
→ 0.x + 1y -21 = 0
» a = 0 , b = 1 , c = -21
(iv). x = -14/13
13x = -14
13x + 14 = 0
compare with ax + by + c = 0
→ 13x + 0.y + 14 = 0
» a = 13 , b = 0 , c = 14
(3.90 - 3.40) / (3.90) = 0.50 / 3.90 = 0.128 x 100 = 12.8%
