D = r• t
reverses the equation so that D and r are on the same side
d/r = t

Sam travels 4 hours at a rate of 50 mph
Answer:
C 64 students have half the height
Answer:
x = -1
y = 9
Step-by-step explanation:
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Um it is the third brainiest please
Complete Question
A biologist reports a confidence interval of (3.5,4.9) when estimating the mean height (in centimeters) of a sample of seedlings. What is the estimated margin of error and the sample mean?
Answer:
The margin of error is 
The sample mean is 
Step-by-step explanation:
from the question we are told that
The upper limit is 
The lower limit is 
Generally the margin of error is mathematically represented as



Generally the sample mean is mathematically evaluated as

=> 
=> 