Answer:
so you might want to lokk at khan acdemy for these types it will give you info
Step-by-step explanation:
v is the wave speed in metres per second, m/s. f is the frequency in hertz, Hz. λ (lambda) is the wavelength in metres
let's firstly, convert the mixed fractions to improper, and then do equation.
Answer:16:18
50°
Opposite angels of a parallelogram are congruent to each other.
This means:
<ADC = <ABC
<ADC = 38° + 12°
<ADC = 50°
Since <ADC = <ABC, therefore,
<ABC = 50°
2205
