A kilowatt hour means 1000 watts of electricity are being used continuously for 1 hr The electric utility company in Laura's town charges $50.05309 for each kilowatt hour used. Laura heats her house with three electric heaters that
each use 1500 watts.

1.How much does it cost to heat her house for 1 day?

2. How many hours would a 75 watt lightbulb have to stay on to result in $1 for electricity
charges?

1. $225.238905

2. 16 minutes or 0.27 hours

Step-by-step explanation:

1.

1000w costs $50.05309 hence 1 w will cost $0.05005309

Each electric heater consumers 1500 W so for three, the total heat consumption will be 1500w*3=4500 W

Cost for the three heaters will be 4500*$0.05005309=$225.238905

Therefore, in 1 day, Laura will spend $225.238905 on heating alone

2.

1 kwh costs $50.05309 hence for 0.075 kwh it will sots 0.075*$50.05309=$3.75398175 Therefore for $1 you will spend

This is approximately 16 mins

Step-by-step explanation:

Given

  the cost of electricity is $0.05309 for each kilowatt hour used.

Find

Solution

1. The cost is the product of the number of kW, the number of hours, and the cost per kWh:

  (1.5 kW/heater)(3 heaters)(24 hours)($0.05309/kWh)

  = (108 kWh)($0.05309/kWh)

  = $5.73

It costs Laura $5.73 per day to heat her house.

__

2. We want to find the number of hours (H) to run a .075 kW bulb for a cost of $1.

  $1 = (.075 kW)(H)($0.05309)

  H = 1/(0.05309·0.075) = 1/0.00398175 ≈251.1 . . . hours

A 75 W bulb can run about 251.1 hours on $1 worth of electricity.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.