Between which two ordered pairs does the graph of f(x) = < x2 + x - 9 cross the negative x-axis?
Quadratic formula: x = -btvb2-4ac
20

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:

idk wbu

step-by-step explanation:

ok so what's the question?

step-by-step explanation: