Ann needs 42 feet of fabric to make a small quilt how many yards of fabric should she buy
2 answers:
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Answer:
50 Db
Step-by-step explanation:
we know that
The loudness in decibels is given by the formula
where
I = sound intensity in watts per square meter (Watts/m^2)
I₀ = reference intensity, = 10^(-12) Watts/m^2
so
For I=10^(-7) Watts/m^2
substitute in the formula above and solve for L
Answer:
b and c
Step-by-step explanation:
We are given that a population whose growth over a given time period can be described by the exponential model
Let initial population = when time t=0
After integrating
We get ln N=rt +C
Where C is integration constant
When t=0 then N=
Substitute the value of C then we get
When r=0.1 then we get
Hence, the population increase not decrease.
When r= 0
Then we get
Hence, the population do not increase or decrease.
So, a population with r of 0 will have no births or deaths during the time period under consideration.
If we take a positive value of r then the population will increase exponentially .
Hence, option b and c are both correct.