A garden patio is covered with grey slabs and yellow slabs. 1/5 of of the slabs are grey. a) Write down the ratio of grey slabs to yellow slabs. Give your answer in its simplest form. There are 55 slabs in total. b) Work out the number of yellow slabs

step-by-step explanation:

answer: idk

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:

answer: 72: 111

step-by-step explanation: