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chubhunter [2.5K]
4 years ago
14

Write this in algebraic. The sum of 12 and 9

Mathematics
1 answer:
Vinil7 [7]4 years ago
8 0

Answer:

21=12+9

Step-by-step explanation:

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X2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?
s344n2d4d5 [400]

Answer:

a + b =1

Step-by-step explanation:

Write the given quadratic as x^2 – 1x – 90 = 0.  This factors into

(x - 10)(x + 9) = 0, and so the roots/solutions are {-9, 10}.

If we call -9 "a" and 10 "b," then the sum a + b is -9 + 10, or a + b =1.

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175

Step-by-step explanation:

10*7=70 70*-1/2=-35 -35*5=175

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2 years ago
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t = 50

Step-by-step explanation:

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