Answer:
8.86 cm²
Step-by-step explanation:
Rectangle - Circle
(3 × 4) - (3.14 × 1²)
12 - 3.14
8.86
He should use a sample size of 655.
We can use the formula
We find the z-value by first subtracting the confidence level from 1:
1 - 0.8 = 0.2
Divide this by 2:
0.2/2 = 0.1
Subtract this from 1:
1 - 0.1 = 0.9
Using a z-table (http://www.z-table.com) we find the z-score associated with this is 1.28.
Now we plug our information into our formula:
Answer: 6*4=24 inches.
Step-by-step explanation:
The area of a rectangle can be found by multiplying the base times the height. If a rectangle has a base of length, 6 inches, and a height of 4 inches, its are is 6*4=24 square inches.
Hope I was useful :)
Answer:
Total number of student tickets sold were 449.
Step-by-step explanation:
Let the number of student tickets sold = a
and the number of non student tickets = b
Total number of tickets sold = 924
So, a + b = 924 ------(1)
Students ticket costs $2 per ticket and non student ticket costs $3 per ticket and total amount collected = $2323
Therefore, the equation will be,
2a + 3b = 2323 --------(2)
Multiply equation (1) by 3 and subtract from equation (2)
(2a + 3b) - 3(a + b) = 2323 - 2772
2a - 3a + 3b - 3b = -449
-a = -449
a = 449
From equation (1)
b = 924 - a
b = 924 - 449
b = 475
Therefore, total number of student tickets sold were 449.
Answer:
22
Step-by-step explanation:
Working backwards
1+1 then x2 is 4
4+1 then x2 is 10
10+1 then x2 is 22