Answer:
b .24
Step-by-step explanation:
Answer:

Step-by-step explanation:
step 1
Find out the price of 160 begonias, if she bought them separately

step 2
Find out the price of 160 begonias, if she bought them by the flat
Remember that
One flat are 20 plants
so
For 160 plants are needed
160/20=8 flat

step 3
Find out the difference

Answer: A.)The response variable is the amount of activity the patients were able to do after surgery, and the explanatory variable is the type of spinal surgery.
Step-by-step explanation:
The response variable focuses on the question in a study or an experiment while the explanatory variable is the one which explains the changes in that variable.
Here response variable is the amount of activity the patients were able to do after surgery while the explanatory variable will be spinal surgery type
Option A is correct
V = s/t
now, t is equal for both cases so we write these 2 equations:
440/(Vp+Vw) = t
and
340/(Vp-Vw) = t
Now again, since t is equal for both cases we can make these 2 equations equal to eachother.
440/(Vp+25) = 340/(Vp-25)
(Vp - 25)*44=34*(Vp+25)
44Vp - 1100 = 34Vp + 850
10Vp = 1950
Vp = 195
Answer is 195mph