Answer:
5
Step-by-step explanation:
Answer: 90% confidence interval would be
Step-by-step explanation:
Since we have given that
n₁ = 50
Number of metal tagged penguins survived = 10
So, 
n₂ = 50
Number of electronic tagged penguins = 18
So, 
So, at 90% confidence interval, z = 1.28
So, interval would be
Hence, 90% confidence interval would be
Answer:
8x+5005073
Step-by-step explanation:
explanation
3x(5+x) - 2x(3x-7)
open the brackets, we have
15x + 3x^2 - 6x^2 + 14x
collect like terms
3x^2 - 6x^2 +15x + 14x
-3x^2 + 29x
answer= -3x^2 + 29x
I think the answer is 85-6369 but I might be weong