Andy works 8 hours and leaves a certain radio on all day. this radio requires 150 watts of electricity. at a price per kilowatt-hour of $0.10, how much will it cost to run the radio for his 8-hour work day?

The cost to run the radio for 8 hours work day is $0.12

Step-by-step explanation:

Given as :

The working hour of Andy = 8 hours

The power consumption of radio = 150 watts

The price per kilowatt-hour = $0.10

Let The cost to run the radio for 8 hours = $x

Now, According to question

The energy rating of radio = power consumption × number of working hours

So,

The energy rating of radio = 150 watts × 8 hours

Or, The energy rating of radio = 1200 watts-hour

∵  1000 watts = 1 kilo-watt

So, 1200 watts = kilo-watt

Or, 1200 watts = 1.2 kilo-watt

∴ The energy rating of radio = 1.2 kilo watts-hour

Now, since The price for energy of 1 kilo-watt hour = $0.10

∴  The price for energy of 1.2 kilo-watt hour = $0.10 × 1.2

Or,  The price for energy of 1.2 kilo-watt hour = $0.12

Hence The cost to run the radio for 8 hours work day is $0.12 Answer

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8