Using the formula for the nth term of an arithmetic progression.
an = a + (n - 1)d
a(4) = a + 3d = 55
a(9) = a + 8d = 90
a(9) - a(4) => 5d = 35
d = 35/5 = 7.
From a(4): a = 55 - 3d = 55 - 3(7) = 55 - 21 = 34
a(2) = a + d = 34 + 7 = 41.
I am orearte sure the correct answer is 280 please give me brainliest if u can
Answer:
Yes
Step-by-step explanation:
Answer: We can't tell you
Step-by-step explanation: Test/quizes can't be posted here because it is a violation of the honor code