PQR is a right-angled triangle. R
7.3 cm
--
5.8 cm
P
Calculate the size of the angle marked x.
Give your answer correct to 1 decimal place.​

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great