There are 17 boxes each box holds 42. how many packets of sweets are there in total?

No.of sweets in one box = 42

No.of sweets in 17 boxes = 42 x 17

                                          = 714

can you make your screen more see able?

then i might be able to .

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: