A family started their vacation with a full tank of gasoline. The car's gas tank hold 18 gallons. They used another full tank of gas while traveling a total of 775 miles. What is the ratio of gallons of gasoline used to the total number of miles traveled?

1) is right

step-by-step explanation:

3

step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: