If
is the mass of the envelope and
the mass of one bookmark, then

We have

Then

so the envelope has a mass of 27 grams.
3v+2 = 7v-6
3v-7v = -6-2
-4v = -8
v = 2
then the length of QS = 3(2)+2 = 6+2 = 8
and the length of TV = 7(2)-6 = 14-6 = 8
If we are trying to find the total all we have to do is multiply 5 by 6 then add 8.3
5 x 6 = 30
30 + 8.3 = 38.3
Hope this helps
-AaronWiseIsBae
A squared plus b squared = c squared will help
Answer: 0.85 L or
or 
Step-by-step explanation:
Since, According to the question,
Landen spent time at the beach last weekend = L hours
And, Matéo spent 15% fewer hours at the beach than Landen did.
Therefore, Number of hours spent by Matéo = (Time spent by Landen last week - 15 % of the Time spent by Landen last week ) hours
= 85% of the Time spent by Landen last week
= 
=
Hours
=
Hours
= 0.85 L Hours