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:
s = -77
Step-by-step explanation:
Answer:NO dodo its wrong you cant d o 1 side to toehr u gotta do left to right then side to side the denominatior!:)
Step-by-step explanation:
EASY
Answer:
D
Step-by-step explanation:
∠AXD = 180°
∠AXB = 32°
so you do 180 - 32 and you get 148. hope I helped:)
