Hey there!
1. 5(s-2) This is because s-2 is the length of each side, and there are 5 sides in a pentagon all of that length, so multiplying it by 5 like this shows its perimeter.
2. 5s-10 This can be found by distributing the first equation, multiplying both s and -2 by 5.
3. (s-2) + (s-2) + (s-2) + (s-2) + (s-2) Each grouping in the parenthesis represents each of the 5 sides, so adding them all together will get you the perimeter.
4. 5(s) + 5(-2) This one is most like the first one, except it's a little more spread out. Multiply the term s by the 5 sides in one grouping, and the integer -2 by 5 in the other.
Hope this helps!
-35°C×9/5+32= -31°F
I'm only 12 dont judge if im wrong
Answer: 13P3= 1716
Step-by-step explanation:
Answer:
20% =1/5
1/5 out of 25= 1/5*25/1=25/5=5
So 5oz -amount of ounces of alcohol in solution.
Solution is then 5oz alcohol + 20oz water =25oz
Add 50oz water
25(already existing) + 50 =75oz New solution
Still only 5oz of alcohol
5/75 =0.06666
Convert to percentage by multiplying result with 100.
Answer: 6.666%
