What is a 3-dimensional shape made of two identical circles connected by a rectangle

i believe that the answer is

b. y-1=-2(x-4)

hope this !

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

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: it is 8

step-by-step explanation:

you know why its 8