Answer:
HELPP NOWW PLEASSEEE
Step-by-step explanation:
i do not know sorry sorry .................
C) should be your answer
associative property means that no matter where the parenthesis is placed, it will not affect the outcome
hope this helps
It would be 5.29 since there are 100 centimeters in 1 meter, you just divide. 529/100=5.29
or just move the decimal place over 2 spots to the left
Answer: 54.88 mph
Step-by-step explanation: the Doppler effect formulae is given below as
f' = (v + vo) /(v - vs) × f
Where f' = observed frequency = 236 Hz,
f = frequency of sound source (stationary frequency) = 253 Hz.
v = speed of sound in air = 761 mph
Since the car (source) is moving away relative to the observer, vs will have a negative value (-vs)
vo = 0 mph ( since the observer is not moving)
By substituting the parameters, we have that
236 = (761+0)/(761 - (-vs)) × 253
236 = (761/ 761 +vs) × 253
By cross multiplication, we have that
236 × (761 +vs) = 761 ×253
761 + vs = 761 ×253/ 236
761 + vs = 192533/ 236
761 + vs = 815.88
vs = 815.88 - 761
vs = 54.88 mph
You explain to them what you had answered and expreinced. Saying that so and so is this because of this.