Answer:
41
Step-by-step explanation:
First, set up the equation (2x+5) + (3x-2)+(3x)+(x)= 57. Add all of the sides together and solve for x. Next, plug in x to 2x+5, and you have your answer. I hope this helps
Answer:
its c
Step-by-step explanation:
Answer:
20 homes
Step-by-step explanation:
Given that :
Total number of homes = 800
Average years at which homes are listed = 8 years
To obtain the annual home listing = total number of Homes / average years
Annual home listing = 800 / 8
Annual home listing = 100 homes
If 20% of the homes are listed on the year in question :
20% of 100 homes
0.2 * 100
= 20 homes
20 homes can be listed that year
Answer:
Answer = a. Explanatory variable: history of sleep apnea; and outcome: Alzheimer’s status.
Step-by-step explanation:
This is Case-Control analytical study where the cases are the 50 participants with Alzheimer’s and the control are the 50 participants without Alzheimer’s. This type of study requires the formulation of certain hypothesis in an attempt to investigate the possible factor (sleep apnea) of a particular health condition (Alzheimer’s disease). The outcome of the studies will explain the roles of specific factors in the incidence and prevalence of a disease. This type of study investigates the hypothesis that there is a relationship between suspected causal factor (sleep apnea: which is referred to as the explanatory variable) and a disease (Alzheimer’s disease: which is referred to as the outcome variable). The study group is selected on the basis of presence or absence of the ‘outcome variable’ which is the disease where the factors (explanatory variable) are already present or not in the case (50 participants with Alzheimer’s) and its controls (50 participants without Alzheimer’s)
0.64 as a percentage is 64%. hope this helps you work out the rest :)