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dimulka [17.4K]
3 years ago
10

A researcher tests a new toothpaste on a small sample of five volunteers.

Mathematics
1 answer:
maks197457 [2]3 years ago
7 0

Answer:

A. Replicate the experiment to see whether the results are similar

Step-by-step explanation:

According to Oxford dictionary, an experiment is a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

It is best practice in science that an experiment is to be carried out three times before conclusion is made on the experiment and the results published.

An experiment is repeated three times due to the fact that a two-thirds (66%) probability of averaged results are more accurate than a single experiment.

An experiment is replicated (repeated) to establish a relationship between experiment results.

Replication lets scientists see patterns and trends in their experiment results.

A replicated experiment gives a scientist an affirmation on the results and gives more validity to the process and the results.

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Advocard [28]

Answer:

198

Step-by-step explanation:

If you take any 3-digit number and change the numbers around and subtract them you will always get 198.

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3 years ago
Please help <3
Aleksandr [31]

Answer:

x =3

Step-by-step explanation:

3(4x + 4) = 2(5x+9) - 12

First step is to open the brackets by multiplying. It becomes

3×4x + 3×4 = 2×5x + 2×9 -12

12x + 12 = 10x + 18 - 12

Collecting like terms on the right hand side and left hand side of the equation, it becomes

12x -10x = 18 -12 -12

2x = -6

Negative sign on the right hand side of the equation overwhelms the positive sign on left hand side of the equation. It becomes

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x = -6/2 = -3

Checking

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So x = -3

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Step-by-step explanation:

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Tom [10]

Answer:

0.52

Step-by-step explanation:

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