You can estimate that 5x4257 is 20,000
to check 5x4257=21,375 which is close to 20,000
Answer:
The margin of error is multiplied by 
Step-by-step explanation:
margin of error (ME) from the mean can be calculated using the formula
ME=
where
- z is the corresponding statistic of the given confidence level
- s is the standard deviation of the sample (or of the population if it is known)
Since margin of error is proportional with inverse of 
,
if we cut the sample size in half, the margin of error is multiplied by .
X=5/8 that is the answer lol
Answer:
Area = 240
Step-by-step explanation:
The roof is 4 Isosceles triangles as two sides are the same and the base is different. The equation for area of an isosceles triangle is area = (1/2) · b · h.
Starting the equation, we know the height = 10 based on the graphic, but we need solve for the base using the information provided in the problem 25.
If the square gazebo is 48 ft around, then perimeter = 48. To find one side of the "SQUARE" gazebo, divide the perimeter by 4 to find one side having a length/base of 12.
We can assume that the base of the gazebo is the same length as the base of the roof, so the base is 12 as well.
Finishing the formula we have:
Area of 1 side of gazebo roof= (1/2) * b * h = (1/2) * 12 * 10 = 60
There are 4 sides to the roof, so multiply the Area of the one side by 4 to find the final result.
Area of full Gazebo roof = 60 * 4 = 240
