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2 years ago

9

Jana is thinking of a number. If she divides her number by 12 and then multiplies the quotient by 8,the result is 520. What numb

er is Jana thinking of?

1 answer:

Neporo4naja [7]2 years ago

3 0

you do the opposite:
520/8=70

70*12=840.

she is thinking of the number 840

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Answer:

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Step-by-step explanation:

Step 1: Build the expression in numerical form.

$(8x^2 +10x - 10) - (-2x^2 + 3x - 9)$

Step 2: Distribute the negative sign.

$8x^2 +10x -10 + (-1)(-2x^2) + (-1)(3x) + (-1)(-9)$
$8x^2 + 10x - 10 + 2x^2 + (-3x) + 9$

Step 3: Combine like terms.

$(8x^2 +2x^2) + (10x -3x) + (-10+9)$
$10x^2 +7x -1$

Therefore, the answer is $10x^2 + 7x -1$ .

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2 years ago

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Alinara [238K]

Answer:

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Step-by-step explanation:

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<u>log (¹⁴⁷/₁₆)</u>

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