The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y.
y =3x10^8/x
What are the wavelengths for X-rays with frequency 3 x 10^18?

1. 1x10^-10m
2. 3x10^-10m
3. 3x10^26m
4. 9x10^26m

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

Ineed me i stuck and i don’t want to get it wrong

Is there a direction u in which the rate of change of f(x, y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.