When decreasing electromagnetic radiation there is a( between wavelength and frequency and the greater the frequency, energy the electromagnetic radiation has

Inverse proportion, greater

Explanation:

The relation between wavelength (λ) and frequency (ν) is given by

Where speed of light in vacuum.

We can see from this equation that wavelength and frequency are related inversely.

Now,

Where 'E' is energy of electromagnetic radiation and 'h' is Planck's constant.

We can see from this equation that greater frequency (ν) will give greater electromagnetic radiation (E). As they are directly proportional.

Hence,

When decreasing electromagnetic radiation there is a(n) Inverse proportion relationship between wavelength and frequency and the greater the frequency, the greater energy the electromagnetic radiation has

the total distance traveled by the car is

30km + 49km = 79 km .

i think the answer is a and b

i wish you luck