Answer: 7 times greater because there are 7 days in a week
Answer:
a=9
Step-by-step explanation:
Answer:
6 + 3 + 2 +
Step-by-step explanation:
Using the rule of radicals
× ⇔
Given
(3 + )(2 + )
Each term in the second factor is multiplied by each term in the first factor, that is
3(2 + ) + (2 + ) ← distribute both parenthesis
= 6 + 3 + 2 +
Answer:
Option B
Step-by-step explanation:
Dilation does not change the value of angle.
so angle measurement should be same as before .
Angle A= 37
Scale factor is 3 so multiply length by 3
So A'C'= 3×5 =15
Answer:
150.51 dB
Step-by-step explanation:
Data provided in the question:
decibel level of sound at 161 km distance = 180 dB
d₁ = 161 km
d₂ = 4800 km
I₁ = 180 db
The formula for intensity of sound is given as:
I =
and the relation between intensity and distance is given as:
I ∝
or
Id² = constant
thus,
I₁d₁² = I₂d₂²
or
therefore,
I =
or
I =
or
I = 20 × (-1.474)
or
I = -29.49
Therefore,
the decibel level on Rodriguez Island, 4,800 km away
= 180 - 29.49
= 150.51 dB