Answer:
(a) 3, 5 and 6
Step-by-step explanation:
In the experiment, 43 are to be given a gel that contains the tooth-whitening chemicals while the remaining 42 are to be given a placebo. Therefore, a placebo is used.
The 43 that will receive the gel are to be selected randomly.
After the experiment, the whiteness of the two groups will be compared to see the effect of the gel.
Therefore for the experiment to be completely random, 3, 5, and 6 apply.
(b)
For the experiment to be double-blind, the researchers who will evaluate the whiteness and interact with the subjects, and the subjects would not know which subjects received either the whitening gel or the placebo.
Answer:
The circle's circumference is equal to 14π yards.
General Formulas and Concepts:
<u>Geometry</u>
Circumference of a Circle Formula: C = πd
- <em>d</em> is the diameter of the circle
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify.</em>
<em>d</em> = 14 yds
<u>Step 2: Find Circumference</u>
- Substitute in variables [Circumference Formula]: C = 14π yds
Topic: Geometry
Answer:
5 units
Step-by-step explanation:
If you look at AC that has 4 units and DE is close to 4 units but a little bigger by a unit
I think it’s y = 10x + 10
