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MaRussiya [10]
2 years ago
6

A cosmetic company tested a new lotion. Of the 2,500 people tested 15 had an allergic reaction. What percentage of the people ha

d an allergic reaction?
Mathematics
2 answers:
Aliun [14]2 years ago
5 0
0.6%. 100% divided by 2,500 people means each person is worth 0.04%. 0.04 times 15 is 0.6
sdas [7]2 years ago
5 0

Answer:

0.6%

Step-by-step explanation:

The cosmetic company tested a new lotion on 2500 people.

Number of people had the allergic reaction = 15

so percentage of allergic patients = \frac{\text{number of allergic people}}{\text{total people taken for test}}\times 100

= \frac{15}{2500}\times 100

= \frac{15}{25} = 0.6%

percentage of the people is 0.6%

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Answer:  Last Option is correct.

Step-by-step explanation:

Since we have given that

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Number of tulips = 150

Number of daffodils is given by

600-150\\\\=450

So, We can get the ratio of tulips to daffodils which is given by

Tulips:Daffodils\\\\150:450\\\\1:3

So, we need to choose a random sample of flowers to represent the population.

1) He can choose 50 flowers.

As there are 1:3 of tulip and daffodils flowers but if we divide 50 by 4 it will give a decimal number, so it can't represent the required thing.

2) He can choose 25 tulips and 25 daffodils

As they are divided into 1:1 so, it can't represent the 1:3 tulip to daffodils population.

3) He can choose 15 tulips and 60 daffodils

As it is divided into 1:4 inspite of 1:3.So it can't represent the required population.

4) He can choose 10 tulips and 30 daffodils.

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Hence, Last Option is correct.

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1 year ago
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What is the quadratic regression equation that fits these data?
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EastWind [94]

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x = 170 / 51

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12 x 3 1/3 = 40 feet

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The area of the triangle = SQRT(S*(S-83 1/3) * (S - 46 2/3) * (S-40))

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{30, 39, 33, 15, 15, 18, 20, 33, 19, 41, 45, 18}

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