Answer:
A dependent variable is a factor that changes because of procedures conducted on the independent variable
Step-by-step explanation:
Using a cause and effect analogy, the independent variable is the causal variable. The independent variable or variables are the variables on which what is being measured, has no effect, and it is the variable the investigator manipulates to find the effect on the dependent variable.
The dependent variable are the variables that shows he effect of the changes made and manipulations to the independent variable. The dependent variable is therefore, the effect variable
Therefore, the correct option is ' A dependent variable is a factor that changes because of procedures conducted on the independent variable'
Intensive properties and extensive properties are types of physical properties of matter. The terms intensive and extensive were first described by physical chemist and physicist Richard C. Tolman in 1917. Here's a look at what intensive and extensive properties are, examples of them, and how to tell them apart.
Intensive Properties
Intensive properties are bulk properties, which means they do not depend on the amount of matter that is present. Examples of intensive properties include:
Boiling point
Density
State of matter
Color
Melting point
Odor
Temperature
Refractive Index
Luster
Hardness
Ductility
Malleability
Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.
Extensive Properties
Extensive properties do depend on the amount of matter that is present. An extensive property is considered additive for subsystems. Examples of extensive properties include:
Volume
Mass
Size
Weight
Length
The ratio between two extensive properties is an intensive property. For example, mass and volume are extensive properties, but their ratio (density) is an intensive property of matter.
While extensive properties are great for describing a sample, they aren't very helpful identifying it because they can change according to sample size or conditions.
Way to Tell Intensive and Extensive Properties Apart
One easy way to tell whether a physical property is intensive or extensive is to take two identical samples of a substance and put them together. If this doubles the property (e.g., twice the mass, twice as long), it's an extensive property. If the property is unchanged by altering the sample size, it's an intensive property.
get rid of -2 by subtracting it from 21
Now you get your answer
Hope this helps! :)
Răspuns:
a) OC = 18cm
b) MN = 6cm
Explicație pas cu pas:
Găsiți diagrama la întrebarea atașată.
a) Din diagramă se poate observa că OC = OA + AB + AC
OC = 2n + 2n + 2 + 2n + 4
OC = 6n + 6
Următorul este să obțineți valoarea lui n:
OM = OA + AM
Să obținem segmentul AM;
Deoarece M este segmentul mijlociu al AC, atunci;
AM = AC / 2
AM = AB + BC / 2
AM = 2n + 2 + 2n + 4/2
AM = 4n + 6/2
AM = 2n + 3
Din moment ce OM = OA + AM
OM = 2n + 2n + 3
OM = 4n + 3
Dat fiind OM = 11
11 = 4n + 3
4n = 11-3
4n = 8
n = 2
Următorul pas este să calculați OC;
OC = 6n + 6
OC = 6 (2) + 6
OC = 18
Prin urmare, lungimea segmentului OC este de 18 cm
b) Această întrebare ne cere să găsim segmentul de linie MN.
Din diagramă, MN = AM - AN
Deoarece AM = 2n + 3 din întrebarea 1;
AM = 2 (2) +3
AM = 4 + 3
AM = 7
Acum, să obținem AN:
Din diagramă, AN = ON-OA și ON = OB / 2
AN = OB / 2 - OA
AN = (2n + 2n + 2) / 2 - 2n
AN = 4n + 2/2 - 2n
AN = 2n + 1 - 2n
AN = 2n-2n + 1
AN = 1
De la MN = AM - AN
MN = 7 - 1
MN = 6cm
Prin urmare, distanța dintre N, mijlocul segmentului OB și punctul M este de 6cm
6xy in simplest form is simply 6 to the second power
Hope this helps!
