Answer:
The margin of error is 3.465
Step-by-step explanation:
Margin of error = t × sd/√n
n = 92, degree of freedom = n - 1 = 92 - 1 = 91, t-value corresponding to 91 degrees of freedom and 90% confidence level is 1.6618, sd = 20
Margin of error = 1.6618×20/√92 = 33.236/9.592 = 3.465
Answer:
5a. 14w
6a. 8b2 - 5b + (-4)
7a. (-3x2) +9x - 4
8a. 3 + 0b
9a. 19 + 6a
Step-by-step explanation: it’s basically imagine that x is :) and y is :( you cant add :( to :) because they are different also the symbols in front of them show if it’s negative or positive
Answer:
Could I have more info please?
Step-by-step explanation:
Answer:
44
Step-by-step explanation:
2 + 3 * 9 + 3 * 5
=> 2 + 27 + 15
=> 29 +15
=> 44
