Hank is painting his grandfather's fence. he painted 40 linear feet in 85 minutes. he still has 360 linear feet to paint. his cousins, sam and alex, come to . sam paints twice as fast and alex paints half as fast as hank. find the constant of proportionality that relates the current fence painting rate? (round to nearest tenth)
a) 0.9
b) 1.2
c) 1.6
d) 2.4

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

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: