Answer:
612 Hz.
Step-by-step explanation:
The frequency of the sound will be proportionally higher when coming towards you. The increase is related to the speed of the train.
So the frequency will be:
580 + (580 / 343) * 18.8
= 612 Hz.
This is called the Doppler effect.
Answer:
11+²√10 question
Step-by-step explanation:
11+2 √10x√10÷√10
11+2x10÷√10
31÷√10 is ur answer sir pls mark brainliest
Answer:
B 2/5
F theoretical > experimental
Step-by-step explanation:
P(heads) = numbers of heads/ total
=8/20 = 2/5
The theoretical (1/2) is greater than the experimental probability
1/2 > 2/5
Answer:
Step-by-step explanation:
<u>Sum of internal angles of a regular polygon is:</u>
<u>We have here 5-sided polygon:</u>
- S = 180*(5 - 2) = 180°*3 = 540°
<u>Now sum the given angles measures and solve for x:</u>
- 3x + 1 + 2x + 15 + 3x - 10 + 3x - 8 + 5x - 2 = 540
- 16x - 4 = 540
- 16x = 544
- x = 544/16
- x = 34°
<u>Find the measure of angle R:</u>
- m∠R = 3x - 10 = 3*34 - 10 = 102 - 10 = 92
- m∠R = 92°
