A triangle is a three-sided polygon. The sum of angles in a triangle is 180 degrees.
<em><u>Types of triangles </u></em>
- An equilateral triangle : the three sides are equal in length.
- An isosceles triangle : two sides are equal in length
- A right angled triangle : an angle measures 90 degrees
The perimeter of a triangle is (8t -7 + u) centimeters
The perimeter of a triangle is the sum of the three lengths of the triangle
2t +2 + 6t - 7 + u -2
Combine similar terms
(2t + 6t) + (2 - 7 - 2) + u
Add combined similar terms
8t -7 + u
To learn more about the perimeter of a triangle, please check: brainly.com/question/11681906?referrer=searchResults
Answer:
59.11
Step-by-step explanation:
Answer:
The percentage is 50%
Step-by-step explanation:
From the question we are told that
The mean is 
The standard deviation is 
Generally on the normal distribution curve the mean divides the curve into two. with the half to the left of the mean (50% to the left )representing the percentage of the batteries that will last less than 14 hours and the area under the curve to the right (50% to the right)representing the percentage of batteries that will last longer than mean (14 hours )
Hence the percentage of the cell phone batteries that will be expected to last longer than 14 hours is 50%
The answer is 53 because 5tens equals 50(10+10+10+10+10=50)
