I uploaded it here as the answers Bc
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Answer:
0.3
Step-by-step explanation:
You are solving for the 32nd term of the sequence. Note that the first term is -9. Also, note that you are adding 0.3 each time.
Multiply 0.3 with 31
0.3 x 31 = 9.3
Add 9.3 to -9
-9 + 9.3 = 0.3
The 32nd term of the sequence is 0.3
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From the given, we have 232 90Th. Thorium has 90 protons in its nucleus, the number of neutrons is calculated by subtracting 90 from 232 which gives an answer of 142. Then, for the second given 228 88Ra, Radium has 88 protons and the number of its neutrons is calculated by subtracting 88 from 228 which is equal to 140.
The final equation that would give us the proper nuclear decay reaction,
232 90Th --> 228 88Ra + 4 2a
where 4 2a is an alpha particle.
Y=6.21
You just subtract 1.05 from each side and then you get your answer
Answer:
a(n)= a(n+1)+4
Step-by-step explanation:
The first terms of this sequence are: 4,0, -4, -8, -12
Let 4 be a0 and 0 a1.
● a1-a0 = 0-4
●a1-a0 = -4
●a1 = -4+a0
So this relation links the first term with the second one.
replace 1 in a1 with n.
0 in a0 will be n-1
● an = -4+a(n-1)
Add one in n
● a(n+1) = a(n)-4
● a(n) = a(n+1)+4