Suppose:
C=cost
c=cost per kilo-watt hour
w=number of watts
h=number of hours
thus
C=kwhc
where:
k=constant of proportionality:
k=C/(whc)
but
C=15 when w=6000, h=10/60=1/6 hours, c=7.5 cents per kw/h
thus
k=15/(6000*1/6*7.5)
k=0.002
thus:
C=0.002(whc)
hence:
when
h=70*2=140=140/6=70/3 hours the cost will be:
C=0.002(6000*70/3*7.5)
C=2100 cents
C=$21
Answer:
9600 sq in
Step-by-step explanation:
30 x 20 x 16 = 9600
Answer:
4
Step-by-step explanation:
Answer:
THANKS!
Step-by-step explanation:
YOU HAVE AN AWESOME DAY!!
Answer:
-25n-2
Step-by-step explanation:
-2(-5n+6)+5(2-7n)
-(-2×5n+2×6)+(-5×7n+5×2)
