Answer: First : C, Variance: 84,000 , Standard deviation: 290
Step-by-step explanation:
i took the test
I = 7.6*10^(-4) is the given intensity of the sound
Io = 10^(-12), which is a constant usually shown in a table or in your book
Plug in those values to get
B = 10*log(I/Io)
B = 10*log((7.6*10^(-4))/(10^(-12)))
B = 88.808135922808
B = 88.81
Answer: Approximately 88.81 decibels
Answer:
Area = 12 square units
Step-by-step explanation:
Area of Rectangle = Length*Width
Where Length = 3 units, Width = 4 units
Area = 3*4
Area = 12 square units
Answer:
The expressions are equivalent.
Step-by-step explanation:
We can simplify each expression and compare the results.
(x + 10) + x + 9 = x + 10 + x + 9 = 2x + 19
2(x + 7) + 5 = 2x + 14 + 5 = 2x + 19
2x + 19 = 2x + 19
Answer: The expressions are equivalent.