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Ber [7]
3 years ago
12

SOMEONE PLEASE HELP ??? Which of the following proportionality statements is correct ?

Mathematics
1 answer:
Leni [432]3 years ago
8 0

Answer:

The third one is correct

Step-by-step explanation:

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The function gx) = x^2is transformed to obtain function hr.
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If x^2-13x+42=(x+A)(x+B), then find the value of 3A-B
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Answer:

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Step-by-step explanation:

Factorise

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Consider the factors of the constant term (+ 42) which sum to give the coefficient of the x- term (- 13)

The factors are - 6 and - 7, since

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compare to (x + A)(x + B)

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thus 3A - B = 3(- 6) - (- 7) = - 18 + 7 = - 11

The factors may also be expressed as (x - 7)(x - 6)

with A = - 7 and B = - 6, then

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Answer:

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Step-by-step explanation:

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