1 answer:
Answer:
<em> = n² + 4n ; n = 11 </em>
Step-by-step explanation:
= 
[2 
+ (n - 1)d]
~~~~~~~~~
= 5
d = 7 - 5 = 2
= [ 2(5) + 2(n - 1)] = ( 8 + 2n ) = 4n + n²
<em> = n² + 4n</em>
n² + 4n = 165
n² + 4n - 165 = 0
(n + 15)(n - 11) = 0 ( n ≥ 0 ) ⇒ <em>n = 11</em>
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74=n^2
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185=n^2
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36+100=n^2
136=n^2
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8. 9^2+n^2=16^2
81+n^2=256
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Plug in the 1/2 where the a’s are answer is -3
You need to subtract 6 from 24 because it’s the inverse operation of addition which will help you find the unknown value, x.
11)
3x = 180
x = 60
12)
6x + 18 = 180
6x = 162
x = 27
Answer:
-100
Step-by-step explanation:
hope this helps...
