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brilliants [131]
3 years ago
11

Anyone helping please....

Mathematics
1 answer:
Goshia [24]3 years ago
7 0

Answer:

a)

(x,y)

(-2,-3),(-1,0),(1,-4),(2,-3),(3,0),(4,3)

b) A

c) -1.75

just substitute the number in.

d) quadratic formula used

x=3.2

x= -1.2

Step-by-step explanation:

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n(n+1)=42 \\
n^2+n=42 \\
n^2+n-42=0 \\ \\
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