megan is making a bracelet using a pattern of 3 black diamonds and 2 gold diamonds. If she uses 150 diamonds in total, how many
1 answer:
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Step-by-step explanation:
15a)
Subtract both sides by 21
15b)
7 and -3 multiply to -21 and add to 4
The factors are (x+7)(x-3)
15c)
x+7 =0
x=-7
x-3=0
x=3
