Answer: observational study
Step-by-step explanation:
Observational study : A study in which an observer analyse one or more characteristics of a population (depends on the objective of the study) by just observing the individuals in a sample of the population, but he / she never influence the variables of interest.
Design experiment : In this experimenter design an experiment with a series of tests to check the change in the dependent variable. Here , the experimenter influences the variables of interest.
Given : A poll is conducted in which 574 high school students are asked about how often they listened to music during the past week.
here , the poll is just observing the interest of students instead of influencing them.
Hence, the study depicts an observational study.
Answer:
The independent variable is the m, which is the number of minutes the hose has been running. The dependent variable is the g, which is the gallons per minute.
Step-by-step explanation:
Answer:
The answer is supposed to be -9, not 9.
Step-by-step explanation:
In step 2, when you are adding a negative plus a negative (-4 + -5) it should always come out a negative. So, step 3 should come out as -9 instead of 9.
Answer:
A
Step-by-step explanation:
you get the numbers then divide after you have multiplied and then just find the distribution of the subtracted number :)
Solution for given equation -(5-(a+1)) = 9-(5-(2-3)) is a = 7
<u>Solution:
</u>
Need to determine solution of following equation’
-(5-(a+1)) = 9-(5-(2-3))
Means need to solve the above equation for "a"
On solving operation in most internal bracket we get
-(5-(a+1)) = 9- ( 5 – ( -1))
On opening inside brackets we get,
-(5 – a – 1 ) = 9 – ( 5 +1 )
On solving remaining brackets we get
-5 + a + 1 = 9 – 6
=> a – 4 = 3
=> a = 4 + 3 = 7
=> a = 7
Hence solution for given equation -(5-(a+1)) = 9-(5-(2-3)) is a = 7