What are the first four terms of the sequence represented by the expression n(n - 1) - 4?
2 answers:
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Answer:
Step-by-step explanation:
Let snowman be x , star be y and shopping bag be z.
<u>So, the given equations are:</u>
1) x + y = 20 (Eq. 1)
2) z = x + x
z = 2x (Eq. 2)
3) z + x = 18 (Eq. 3)
Put Eq. (2) in Eq. (3)
2x + x = 18
3x = 18
Divide both sides by 3
x = 18 / 3
x = snowman = 6
Now, Put x in (Eq. 1)
6 + y = 20
Subtract 6 to both sides
y = 20 - 6
y = 14
So,
Star = 14
Hope this helped!
<h3>~AH1807</h3>