Answer: 1120
Step-by-step explanation:
Given: Size of the population in the study = 1200
Also they revealed that 12 out of every 180 frogs in the population have spots on their back.
Thus we have fraction
Hence, of total frogs have spots.
Now,
Therefore, 80 out of 1200 frogs in the population have spots.
Thus, the number of frogs in the population do not have spots = 1200-80=1120
Answer:
the answer is 11.7
Step-by-step explanation:
Answer:
270
Step-by-step explanation:
because 1 forth of turn is 90 and 90*3=270
Double angle formula for cos(2x) is
cos(2x)=cos^2(x)-sin^2(x)
Substitute x=4theta, then
cos(8theta)=cos^2(4theta)-sin^2(4theta)
=>
cos^2(4theta)-sin^2(4theta) = cos(8theta)
Answer:
Switch x and y.
Step-by-step explanation:
Switch the x and y, so the equation would read as:
Then solve for y.
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