Brielle's piggy bank has all nickels and dimes. The total value of the money in her piggy bank is 7.80. If Brielle has 66 nickels, write and solve a linear equation to find the number of dimes she has.

.25

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

1010: 3030

is it i think

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: