soccergirly7588
12.11.2020 •
Mathematics
1. (9х3 + 5x)
- 7x - 3x)
Help me solve this and give me the answer.
Solved
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Ответ:
2x³ + 8x
General Formulas and Concepts:
Pre-Alg
Distributive PropertyAlg I
Combining like termsStep-by-step explanation:
Step 1: Define
(9x³ + 5x) - (7x³ - 3x)
Step 2: Solve
Distribute negative: 9x³ + 5x - 7x³ + 3xCombine like terms: 2x³ + 8xОтвет:
Answer-
The margin of error is 0.66
Solution-
The times it took for 35 loggerhead sea turtle eggs to hatch in a simple random sample are normally distributed, with a mean of 50 days and a standard deviation of 2 days.
So here,
sample size = n = 35
confidence level (95%) = z = 1.96
mean = μ = 50
standard deviation = s = 2
We know that,
Putting the values,
Therefore, the margin of error is 0.66