7/15 is your answer I am so happy that I could help :)
The answer is 2, hope this helps !
Answer:
Step-by-step explanation:
casbheq3
If a, b, c is an arithmetic sequence then a + c = 2b
a = 1/10; b = 3/20, c = 5/30
a + c = 1/10 + 5/30 = 3/30 + 5/30 = (3+5)/30 = 8/30
2b = 2 · 3/20 = 3/10 = 9/30
8/30 ≠ 9/30
If a, b, c is a geometric sequence then ac = b²
ac = 1/10 · 5/30 = 1/2 · 1/30 = 1/60
b² = (3/20)² = 9/400
1/60 ≠ 9/400
<span>Answer: Neither.</span>
P = 2l +2w
820 = 2(w - 70) + 2w
<span>820 = 4w - 140 </span>
<span>820 - 140 = 4w</span>
<span>680/4 = w
170 = w
let me know if you need an explanation of how i got any of the steps
:)</span>
