In the research of Professor Nwamabi the use of air conditioning represents independent variable.
Given 100 participants are randomly selected in a research in which effects of air conditioning on sleep habits is studied.
Dependent variable is the variable whose value is dependent on the other variables like increase in profit and production.
Independent variable is the variable whose value is not dependent on the other variables.
In the research of Professor Nwamabi in which he is examining the effects of air conditioning on sleep habits, use of air conditioning represents independent variable. In this study the effect is on sleep habits means the value of sleep habits will change due to use of air conditioning. It shows that the use of air conditioning is not depending on other variable in the research.
Hence the use of air conditioning represents the independent variable.
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Given that the point (12,-5) which takes the form (x,y), This implies that:
opposite=-5
adjacent=12
thus using using Pythagorean theorem, the hypotenuse will be:
c^2=a^2+b^2
plugging the values we obtain:
c^2=(12)^2+(-5)^2
c^2=144+15
c^2=169
thus
c=13
but
cos θ=adjacent/ hypotenuse
therefore:
cos θ=12/13
Answer is option . D
Answer:
y= -1/2x + -1
Step-by-step explanation:
Mr. Jenson needs 250 square tiles of dimensions 12 cm which cover 3.6 square metres walkway.
What is the area of Square?
The area of a square is the product of the length of each side with itself, i.e. Area A = s x s where s is the length of each side of the square.
Mr. Jenson wants to tile 3.6 sq. meters or 36000 sq. cm.
Total number of tiles is 250.
Area of tile = 
= 36000/ 250 = 144 sq. cm
s X s = 144 sq. cm
s = 
cm
s = 12 cm
Thus, Mr. Jenson needs 250 square tiles of dimensions 12 cm which cover 3.6 square metres walkway..
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Answer:
B?
Step-by-step explanation:
I am assuming the > is meant to be an = though
