The percent of the discount is 28 percent off
Answer:
Step-by-step explanation:
According to the midsegment theorem, the length of each side of the formed triangle is the half the parallel side of DEF.
<u>So the perimeter is:</u>
- P = 1/2(12 + 16 + 20) = 24
$20×.25=$5
$20-$5=$15
$15×.15=$2.25
$15+$2.25=$17.25
$17.25 is your answer
Hmmm... a geometric sequence MUST have a fixed common ratio. If it is changing, then the sequence you are looking at might not be a geometric sequence at all. We'd need to see an example to be sure.
The three acute angles are 70 and the obtuse ones are 110.