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Answer:
x = 12.
Step-by-step explanation:
Given:
Cross multiply to solve for x:
3 · 20 = 5 · x
60 = 5x
Divide by 5:
12 = x.
Answer:
(10-2)/4
Step-by-step explanation:
10-2=8
8/4=2
First number = x
second number = x-3
third number = 2x
x + x-3 + 2x = 53
4x -3 =53
4x -3+3 =53+3
4x = 56
4x/4 = 56/4
x = 14
first number = 14
second number = 14-3
second number = 11
third number = 2x
third number = 2(14)
third number = 28
14 + 11 +28 = 53
53=53
Complete Question
Find a formula for the sum of n terms.
Use the formula to find the limit as
Answer:
Step-by-step explanation:
So let assume that
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Generally
So
and
Therefore
Now
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Therefore