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Vlad1618 [11]
3 years ago
5

BRAINLISTS!! 35 (69) points !!

Mathematics
2 answers:
brilliants [131]3 years ago
8 0

Answer:

(A) and c

(B) and a

(C) and d

(D) and b

musickatia [10]3 years ago
5 0

Answer:

(A) and c

(B) and a

(C) and d

(D) and b

Step-by-step explanation:

these are from the calculations i got, what you do is minus the two answers you have to find n

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I'm sorry what does this mean

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I dont really get what you are asking in this question

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Three times 9 plus 7
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Ivahew [28]
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3 years ago
Hi May I know how to solve this question with step by step explanation please
Anuta_ua [19.1K]

Answer:

a = 1, b = - 2

Step-by-step explanation:

The points that lie on the curve and straight line satisfy the corresponding equations.

Substitute the points into their corresponding equations, that is

(1, - 1 ) → - a = 1² + b = 1 + b ( multiply both sides by - 1 )

a = - 1 - b → (1)

(3, 3 ) → \frac{-3b}{2} = \frac{3}{a} ( cross- multiply )

- 3ab = 6 ( divide both sides by - 3 )

ab = - 2 → (2)

Substitute a = - 1 - b into (2)

(- 1 - b)b = - 2 , distribute left side

- b - b² = - 2 ( multiply through by - 1 )

b² + b = 2 ( subtract 2 from both sides )

b² + b - 2 = 0 ← in standard form

(b + 2)(b - 1) = 0 ← in factored form

Equate each factor to zero and solve for b

b + 2 = 0 ⇒ b = - 2

b - 1 = 0 ⇒ b = 1

Substitute these values into (1) for corresponding values of a

b = - 2 : a = - 1 - (- 2) = - 1 + 2 = 1

b = 1 : a = - 1 - 1 = - 2

Thus a = - 2, b = 1 or a = 1, b = - 2

Given that a > b then a = 1, b = - 2

3 0
2 years ago
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