Answer:
The percentage decrease is 29%
Step-by-step explanation:
Given
Required
Determine the percentage decrease
This is calculated as thus:
Substitute values for Final and Initial
<em>Get absolute value of -87</em>
Hence, the percentage decrease is 29%
The centroid is 1/3 the distance from any side to the opposite vertex (along the median). That is, the centroid divides the median into parts with the ratio (1/3):(2/3) = 1:2. Then QE = (1/2)AQ, so
... QE = (1/2)·18 = 9 . . . . matches selection C.
The interior angles of a triangle add up to 180 degrees.
(2x - 10) + (x + 30) + 70 = 180...combine like terms
3x + 90 = 180
3x = 180 - 90
3x = 90
x = 90/3
x = 30
m < A = 2x - 10 = 2(30) - 10 = 60 - 10 = 50 <== m < A