Question

4. Fill in the blanks a) The basic cause of all sounds is b) Frogs while croaking puff their up their throat c) The voice box of human beings has two stretched across it d) Sound propagates much faster through as compared to gases e) The number of vibrations produced in one second is f) The describes the shrillness or flatness of a sound g) The frequency below 20 hertz that cannot be detected by the ear is known as frequency vibrations h) Noise is due to sounds produced by of trees along roadsides helps in absorbing sound misten statement are true false Or​

Answer 1

Answer:

if a number is increased by 4 time then cube of the number will increase4,50,000 in a year and saves 60.000. Find the ratio of the money that she earns to the money she spends. (i) money that she earns to the money these ii money that she spends to the money that she save