daniel1480
12.02.2021 •
Mathematics
Kieran subscribes to a text messaging service on his cell phone. His monthly bill for the service is given by the equation b = 0.27t, where b is the bill amount and t is the number of texts. The constant of proportionality in terms of cost per text is ___.
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Ответ:
0.27
Step-by-step explanation:
b = bill amount
t = number of texts
b and t are proportionally related as ;
Bill amount α number of texts
b α t
b = kt
Where, k = constant of proportionality
Comparing b = kt with the equation given :
b = kt
b = 0.27t
Hence, k = 0.27
Constant of proportionality = 0.27
Ответ:
A= 153.94 cm^2
Step-by-step explanation:
A= pi(r)^2 = Pi* 7^2 = 153.93804 cm
round --> 153.94cm^2