1yard =3ft so 》 6ft/4×3ft=6/12=1/2
C = # of carpenter hrs , b = # of blacksmith hrs
c + b = 30...c = 30 - b
20c + 25b = 690
20(30 - b) + 25b = 690
600 - 20b + 25b = 690
-20b + 25b = 690 - 600
5b = 90
b = 90/5
b = 18 <== hrs worked as blacksmith
c + b = 30
c + 18 = 30
c = 30 - 18
c = 12 <== hrs worked as carpenter
Answer:
See attached
Step-by-step explanation:
Answer is attached
Answer:

Step-by-step explanation:
So I'm assuming when you typed "log yhat=.4785 + 1.468x", you meant to write:
. And generally a logarithm can be written in the form
which can then be rewritten as
, but since the log has no base, it's assumed to be 10. So in this case you have the equation:
, which can then be written in exponential form as:

I think it’s 3 out of 20 or 3/20 hope I could help you