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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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All sides of quadrilateral ABCD ABCD A, B, C, D are tangent to circle PPP. What is the perimeter of the quadrilateral below?
noname [10]

Answer:

The answer is below

Step-by-step explanation:

A tangent is a line which touches a circle at one point. The angle between a tangent and a circle is 90°.

The two tangent theorem states that tangent that meet at the same point are equal in length.

Therefore:

CD = c + d

but c = 5.1, hence:

CD = 5.1 + d

12.1 = 5.1 + d

d = 7

AD = a + d; but AD = 12.2, d = 7

12.2 = a + 7

a = 5.2

AB = a + b; but b = 3.3

AB = 5.2 + 3.3 = 8.5

BC = b + c = 3.3 + 5.1 = 8.4

Perimeter of ABCD = AB + BC + CD + AD = 8.5 + 8.4 + 12.1 + 12.2 = 41.2

4 0
3 years ago
Help me I need help fast
hoa [83]

Answer:

1. angle b is equal to 47 as it is a corresponding angle to the angle that is 47

2) ASA, 3) SSS 4) ?? not quite sure, it's either AAS or cannot be determined...

5) AAS 6) SAS

Step-by-step explanation:

plz mark as brainliest would be appreciated

6 0
3 years ago
The problem is in the picture​
Aleonysh [2.5K]

Answer:

27%

Step-by-step explanation:

In the row Students ages 14-17 and column skip breakfast, there are 24 students.
In row total and column total, there 90 students.

24/90 are students age 14-17 who skip breakfast

24/90 = 12/45 = 0.26666667

Percent = decimal x 100

Percent = 0.26666667 x 100 = 26.666667

26.666667 is rounded to 27%

Hope this helps :)

Have a nice day!

5 0
3 years ago
Read 2 more answers
What is 8/8 in word form?
dexar [7]

Answer:

EIGHT divided by EIGHT

Step-by-step explanation:

The 8/8 word form is EIGHT divided by EIGHT

6 0
3 years ago
Read 2 more answers
find the value of c that makes each trinomial a perfect square. then write the trinomial as a perfect square. the equation , x^2
mr Goodwill [35]
Therefore, the value of C should be (11/2)^2

<span>To square a fraction, take the square of the numerator and put it over the square of the denominator. So since 11^2=121 and 2^2=4, (11/2)^2
(11)^2/(2)^2=121/4
</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
3 0
3 years ago
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