19,810 rounded to the nearest hundred is 19,800.
8 is in the hundreds place, and the number 1 is in front of it.
Numbers 1-4 in front of the number make the number stay the same.
Numbers 5-9 in front of the number make the numbers round up one number.
Answer:
3
Step-by-step explanation:
It owuld be 3 cuz the least significant digit would be used to determine the precision right? So it would be 3!
20% * 158.08 =31.616
or
20% * £158.08 =48.1005824
Answer:
(a) $1.48
(b) $0.0051 . . . . slightly more than 1/2¢
Step-by-step explanation:
cost = (kW)(hours)(cost/kWh)
(a) cost = (0.040 kW)(24 h/da)(14 da/wk)($0.11/kWh) ≈ $1.478
The cost of leaving the porch light on is about $1.48.
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(b) cost = (0.925 kW)(3 min)/(60 min/h)($0.11/kWh) ≈ $0.00509
The cost of toasting bread is about 0.5 cents.