The common difference, d, can be determined by subtracting the two consecutive values:
1 - 5 = -4
-3 - 1 = -4
-7 - -3 = -4
Then, using the equation:
an = a1+ d(n-1)
a_21 = 5 + (-4)(21 - 1)
a_21 = -75
The answer is letter D. I hope I was able to help you. Have a good day!
Answer:
The given statement is,
(3 * 4) * 6 = 3(4 * 6)
To find (3 * 4) * 6
(3 * 4) * 6 = 12 * 6 = 72
To find 3(4 * 6)
3(4 * 6) = 3 * 24 = 72
Step-by-step explanation:
The result of these two expression is same.
Therefore we can conclude that,
Therefore the correct answer is,
The grouping of the factors is changed but the product is the same.
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I think it’s 34 hope this helps