Find Z for the following sequence: 210, 209, 213, 186, 202, Z
1 answer:
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Answer:
<h2>405</h2>Step-by-step explanation:
The nth term of a geometric sequence is given by the formula
Given data
first term a1=5 and
common ratio r=-3
n= 5
The 5th term is 405
Answer:
20,21
Step-by-step explanation:
Let x be the first number.
Let y be the 2nd number.
Given y - x = 1 (since they are consecutive)
Rearrange it: y = x+1 (equation 1)
Also given:
(equation 2)
Now we can substitute y = x + 1 into equation 2.
Since we know x, the smaller number is 20, we can substitute to equation 1 to find y, the larger number.
y = 20+1
= 21.
Therefore the 2 numbers are 20 and 21.