Answer:
The claim made by the researcher lacks the validity on basis of reasons as indicated in the explanation.
Step-by-step explanation:
The claim made by the researcher is not valid on basis of following reasons:
- Interacting variables are not mapped accurately. The additional variables as the health status of the volunteers, eating and fitness habits are not considered in the consideration. This results in a in complete validation.
- The placebo effect is not catered accordingly. As the half of the volunteers are taking nothing, this is not the direct influence of the placebo and thus double-blinded testing for placebo effect is to be ensured in future experiments.
- The environmental effects are not considered as the effect under study is dependent on the environmental effects, thus the claim is biased and the generalization is not valid.
Assume x are Erica's classes & y are Bo's classes.
x+y=35
x=2y-13
Replacing the value of x into the first equation
2y-13+y=35
3y=35+13
y=16 classes
x=2*16-13=19 classes
Answer:
x=15.5
Step-by-step explanation:
2x+1=32
2x=32-1
2x=31
x=15.5
Answer:
<u>First</u><u> </u><u>equation</u>
from definition of acceleration:

<u>Second</u><u> </u><u>equation</u>
from displacement:

but v is u + at :

<u>third</u><u> </u><u>equation</u>
from displacement:

s » displacement
v » final velocity
u » initial velocity
a » acceleration
t » time
Answer:
X=-8
Step-by-step explanation:
113°-69°-52=x
-8=x