Samantha finds some nickels and pennies under the couch cushions. How much money (in dollars) does she have if she has 120 nickels and 100 pennies? How much money (in dollars) does she have if she has xx nickels and yy pennies? Total value, 120 nickels and 100 pennies (dollars):
Total value, xx nickels and yy pennies (dollars):

She would have $7 in total.

Step-by-step explanation:

120 nickels x 5 = 600 = $6.00

100 pennies = $1.00

we need the options

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: