The total bill of a dinner party was 113.58. if each person paid 12.62 how many people attended the dinner party?

  9

Step-by-step explanation:

If n is the number of people attending, we want the amount paid by each to add up to the total bill. That is ...

  n × 12.62 = 113.58

This is solved by dividing both sides of the equation by 12.62, the coefficient of n. Doing that will make the coefficient n become 12.62/12.62 = 1.

  113.58/12.62 = n = 9

9 people attended the dinner party.

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: