In this experiment, there is an independent variable that is the time spent playing video games.
<h3>What is an independent variable?</h3>
In research there are different ways to test a hypothesis. One of them is the experiments in which we have one or more factors that can be modified to alter the result.
These factors are known as independent variables because their variation does not depend on other factors. On the contrary, they influence the variation of other factors that are known as dependent variables.
According to the above, it can be inferred that time is the independent variable of this research because its modification is planned to evaluate the different variables that it can cause.
Learn more about experiments in: brainly.com/question/9199868
Answer:
7(b^2 -2)(b^2 +2)
Step-by-step explanation:
Factoring the common factor 7 from both terms, you get the difference of squares. That can also be factored.
v = 7(b^4 -4) = 7(b^2 -2)(b^2 +2)
The difference b^2-2 will have irrational factors, so does not meet the problem requirements. This is the factorization over integers.
Answer:
x = -3
Step-by-step explanation:
x + x + x = 3 x
3 x + -3 = -12
-12 - -3 = 9
3x = -9
x = -9 ÷ 3 = -3
Answer: 
Step-by-step explanation:
Given
Kira order 2 pieces of tuna and 5 pieces of crab
While Marcy ordered 3 pieces of tuna and 6 pieces of crab
Total tuna ordered =2+3=5 pieces
Total crab ordered=5+6=11 pieces
The ratio of Tuna and crab is 
Answer:
Matter in living things may pass into nonliving things.
Step-by-step explanation:
