Line A has equation y= 4x-1 Line B is perpendicular to line A and passes through the point (8,5)
Work out the coordinates of the point where line B intersects the x axis

b i think

step-by-step explanation:

not really sure

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:

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)