Answer:
a) The variable of the study is: milligrams of nitrogen per liter of water.
This is the amount that needs to be measured and analyzed to reach conclusions in the study.
b) The variable is quantitative. The quantitative variables are those that represent quantities. This variables can be measured on a continuous or discrete scale. Then, all the variables that you can measure or count are quantitative variables(height of trees, number of passengers per car, wind speed, milligrams of nitrogen per liter, etc). On the other hand, qualitative variables are those that can’ t be measured, and they represent attributes, like apple colors (red, green), size of trousers (small, medium, large) and so on.
c) The population under study is the milligrams of nitrogen per liter of water that are in the entire lake. You can estimate the parameters of the population by taking samples (In the example, 28 samples are taken).
Answer:
the answer is B: 4
Step-by-step explanation:
The common factors of 36 and 40 are 1, 2, 4. We can use prime factorization to identify the common factors.
1.) Turn the problem into a fraction.
- 5/8 (the number of drops of red paint/ the number of drops of red paint)
2.) multiply top and bottom by 3 because 5 drops of red paint ×3=15 drops of red paint.
The bottom number of the fraction will be your answer.
I hope this helped
Answer:
k=98
Step-by-step explanation:
<u>Let's solve your equation step-by-step.</u>
56=k−42
<u>Step 1: Flip the equation.</u>
k−42=56
<u>Step 2: Add 42 to both sides.</u>
k−42+42=56+42
k=98
I Hope This Helps If Not Then Im Srry....
Easy way is to look at the term with the highest exponent. The exponent determines the number of roots. Some might be double roots. THough not all of then will be real. The imaganry ones come in pairs
Examples:
x^4 - 4 roots
x^7 - 7 roots
x^3 - 3 roots