Answer:
Option A : is the correct answer.
Step-by-step explanation:
Given that:
Height of triangle ABC = 14 meters
Base of triangle ABC = (20 + 37) meters
Base of triangle ABC = 57 m
Area of triangle = 1/2 * Height * Base
Area of triangle = * 14 * 57 square meters
Hence,
Option A : is the correct answer.
Answer: Correct critical value = 2.2622
Step-by-step explanation:
Confidence interval for population mean when population standard deviation is unknown:
, where
= sample mean, n= sample size, s= sample standard deviation,
= two-tailed t value.
As per given: n= 10
degree of freedom : df = n-1=9
Critical t-value :
So, the 95 percent confidence interval estimate for the mean :
The 95 percent confidence interval estimate for the mean:(190.14, 295.06)
The height of the given trapezoid is 7.5 m.
Step-by-step explanation:
Step 1:
The trapezoid's area is calculated by averaging the base lengths and multiplying it with the trapezoid's height.
The trapezoid's area,
Here is the lower base length and
is the upper base length while h is the height.
Step 2:
In the given problem, and
. Assume the height is h m.
The trapezoid's area
So the height of the given trapezoid is 7.5 m.
Answer:
Step-by-step explanation:
The <em>change in y</em> is the difference in y-coordinates between the lower right point and the upper left point. Similarly, the <em>change in x</em> is the difference in the x-coordinates of those points.