Answer:
There are 10 two point questions and 16 five point questions.
Step-by-step explanation:
- x = the number of 2 points questions
- y = the number of 5 points questions
- x + y = 26
- 2x + 5y = 100
- x = 10 two points questions
- y = 16 five points questions
<u>Answer</u>:
The resale value after three years = $ 632.8125
<u>Explanation</u>:
Given the laptop purchase for $1500
Therefore, the cost price = $1500
According to the question, the resale value decreases by 25%,
Then after three years, the resale value is
Resale Value = 
Substituting the values,
Resale Value = 
Resale Value = 
Resale Value = 
Resale Value = $632.8125
Therefore, the resale value after three years = $ 632.8125
Answer:
the answer is 8 units so that all i have to say.
Answer:24x
Step-by-step explanation:
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.
