The staff of a bank consists of a manager, the deputy manager and other 10 officers. A committee of 4 is to be selected. Find the number of ways in which this can be done so that this can be done so as to always include (i) the manager, (ii) the manager but not the deputy manager, (iii)neither the manager nor the deputy manager.

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

alright well the answers to your question is

2xy/9 hope this have a nice day : )

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:

25/6 hope it : )

step-by-step explanation: