It is B or 2. Hope this helps
Answer:
<em>343 metres per second
</em>
<em>In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).</em>
<em></em>
Answer:
x=111
Step-by-step explanation:
the supplementary angle is 16. triangles should add up to 180.
Answer:
Step-by-step explanation:
here
