Answer:
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.
Step-by-step explanation:
−2w−2<−8
Step 1: Add 2 to both sides.
−2w−2+2<−8+2
−2w<−6
Step 2: Divide both sides by -2.
−2w
−2
<
−6
−2
w>3
Answer:
a>-8
Step-by-step explanation:
-4
2/3a>-12
a>-8
Answer:
Explanatory variable = Effect of music
Response variable = Memory response
Step-by-step explanation:
An explanatory variable, also known as independent variable, is a variable that can be manipulated so as to analyse their effect on another variable. It is used to predict or explain differences in another variable.
Response variable is a variable whose variation depends on other variable. It is also called a dependent variable.
In this analogy, since the effect of music on memory is what is to be known, music is the explanatory variable while memory is a response variable.