A28-a23 =15 then the common difference of the ap
Answers
Answered by
4
Answer:
3
Step-by-step explanation:
just use the general formula of An = a + (n-1) × d
for both n=28 and n= 23 and solve as shown.
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Answered by
11
Answer:
d= 3
Step-by-step explanation:
a28 -a23 = 15
here
a28 = a+27d....…......1 eq.
a23= a+22d..............2eq.
from eq 1 and 2 put the value of a28 and a23
a28-a23=15
a+27d-(a+22d) = 15
a+27d-a-22d = 15
=>
27d - 22d = 15
5d= 15
d= 15/5
d= 3
therefore; your answer is 3
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