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AnnyKZ [126]
3 years ago
12

Which of the following does not describe a control group? O A. a group of patients given a new drug B. a group of patients given

a placebo O C. a group of trees not given a new growth hormone O D. a group of students not given a new software package​
Mathematics
2 answers:
Setler [38]3 years ago
7 0

Answer:

The answer has to be A

Step-by-step explanation:

The trees have nothing changed about them, so they can be considered to be the control. In additon, placebo is given as a control in medical trials, so it cannot be correct. And, the students have nothing changed in D, so the answer to this question has to be A, where the patients are given a new drug.

Veronika [31]3 years ago
5 0

Answer:

the answer = C (may be but not sure)

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Mandarinka [93]

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We combine like terms to get 3x-20000=211000.

We add 20000 to both sides to get 3x=231000.

We divide both sides by 3 to get x=77000, so the average yearly salary of a lawyer is 77000.

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8 0
3 years ago
pls help me on this lol i tried putting 2 in but that isn't right so 2 isn't the right answer pls helpppp
kkurt [141]

Answer:

2

Step-by-step explanation:

The correlating sides are similar meaning;

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using cross multiplication you will get;

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which simplifies to;

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(3x-5)(2x+7) =

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Answer:

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Step-by-step explanation:

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