Answer:
a. 2
b. 4
c. 13
Step-by-step explanation:
The general term of an arithmetic progression is ...
an = a1+d(n-1)
where a1 is the first term, and d is the common difference.
The sum of n terms is ...
Sn = n(2a1 +d(n -1))/2
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The given relations tell us ...
S10 = 10(2a1 +9d)/2 = 10a1 +45d = 130
and
a5 = 3a1
a1 +4d = 3a1
4d = 2a1
2d = a1
Using this in the equation for S10 above, we have ...
10(2d) +45d = 130
d = 130/65 = 2
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(a) The common difference is 2.
d = 2
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(b) The first term is a1 = 2d = 2(2)
a1 = 4.
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(c) an = 28 = 4 +2(n -1)
24 = 2(n -1)
12 = n -1
13 = n
The 13th term is 28.
It would be the 2nd answer because you it is a full circle so it has to be equal to 360 and all you would have to do is add 80 and 35 and subtract it from 360 to get the measure of EHG
Answer:
37.7 ft
Step-by-step explanation:
you have to to find the area of the figure first then multiply by the height
Dont say you can't! I believe in youu!