A+b=2ab
btc=3bc
c+a=7ca

she will travel a distance in the range of 3 - 11 miles

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

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:

20days louise can read300 pg

step-by-step explanation:

1 day 15 pg 300: 15= 20

x day 300 pg