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:
Therefore
![75\div 5 - [(9-7)\times 3 ]\times 2 = 3](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%289-7%29%5Ctimes%203%20%5D%5Ctimes%202%20%3D%203)
Step-by-step explanation:
To Find:
Value of expression
75 ÷ 5 - [( 9 - 7 ) × 3 ] × 2
Solution:
PEDMAS rule
It explains the order of operations to solve an expression.
According to Pedmas rule, if an expression contains brackets ((), {}, []) we have to first solve or simplify the bracket followed by of (powers and roots etc.),
then division, multiplication, addition and subtraction from left to right.
P - parenthesis
E- exponent
D/M - Div or Multiply which ever comes first
A/S - Add or Sub which ever comes first.
So first we will solve the Parenthesis we get
Step 1. Parenthesis operation
75 ÷ 5 - [( 2 ) × 3 ] × 2
Step 2. Parenthesis operation
![75\div 5 - [(2)\times 3 ]\times 2](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%282%29%5Ctimes%203%20%5D%5Ctimes%202)
Step 3. Division
![15 - [6]\times 2](https://tex.z-dn.net/?f=15%20-%20%5B6%5D%5Ctimes%202)
Step 4. Multiplication

Step 5. Subtraction
3
Therefore
![75\div 5 - [(9-7)\times 3 ]\times 2 = 3](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%289-7%29%5Ctimes%203%20%5D%5Ctimes%202%20%3D%203)
Here a "success" is "obtaining a 7 or a 5." Assuming that the 10-sided die is marked {1, 2, 3, ... , 9, 10}, there are 2 ways in which to get a "success" out of 10 possible outcomes. Thus, P(5 or 7) is 2/10, or 1/5, or 02.
Answer:
0.7% off
Step-by-step explanation:

9.67 × y = 9.6 × 100
9.67y = 960
9.67y ÷ 9.67 = 960 ÷ 9.67

y = 99.2
100% - 99.2% = 0.8%
Answer:
2. 60
Step-by-step explanation:
tan x = opp/ adj
tan 40 = x/ 72 ft
x= tan40 * 72 ft
x= 60.415 ft