What is the value of the expression 9x2 - 12x + 4 when x = 3?

Mathematics

1 answer:

AURORKA [14]3 years ago

7 0

9514 1404 393

Answer:

(b) 49

Step-by-step explanation:

Put the value where x is in the expression and do the arithmetic.

9x² -12x +4 for x=3

9·3² -12·3 +4 = 9·9 -36 +4

= 81 -36 +4 = 49

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Stella divides 12/8 on her calculator and gets 1.5. Assuming that Stella has not adjusted the calculator's settings, what do the

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Let us check given options one by one .

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C) The calculator rounded the answer. : On dividing 12 by 8, we get exactly 1.5. So, no rounding is required.

D) The calculator truncated the answer. : On dividing 12 by 8, we get exactly 1.5. So, no truncation in the answer.

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