Answer:
The sampling technique used here is Stratified random sampling.
Step-by-step explanation:
Stratified random sampling is a sampling procedure where the researcher first divided the entire population into groups, known as strata. These groups are homogeneous in nature.
Then from these strata a simple random sample of individuals are selected.
In this case the Biologist first divide the entire region of Red foxes into various groups. Then he samples 100 female foxes from each of these groups.
This is an example of stratified sampling.
Thus, the sampling technique used here is Stratified random sampling.
Answer:
x = 0, π/4, π, 7π/4
Step-by-step explanation:
sin(2x) = √2 sin x
Use double angle formula.
2 sin x cos x = √2 sin x
Move everything to one side.
2 sin x cos x − √2 sin x = 0
Factor.
sin x (2 cos x − √2) = 0
Solve.
sin x = 0, cos x = ½√2
x = 0, π/4, π, 7π/4
Answer:
It's blurry and can you please just write what it says?
Answer:
40 is the missing angle
Step-by-step explanation:
all straight angles must add up to 180
so if we add 80+60=140 then do 180-140=40
that should be the answer
