V3+4v2-5v+3v2+12v-15
v3+7v2+7v-15
The answer is 2 radical 3
The total of her first six quizzes is 75*6 = 450
Let her seventh score be x
The total of her seven quizzes be 450+x
Then, (450+x)/7 = 77
x = (77*7) - 450 = 89
Her seventh score is 89
x =
Answer:
2 and 1
Step-by-step explanation:
x^2 - 3x + 2 = 0
(x-2)(x-1) = 0
the x can be 2 and 1
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