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3 years ago

What is the x in 120(2x-2)=240

Mathematics

1 answer:

coldgirl [10]3 years ago

7 0

Answer:

X=2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

120(2x−2)=240

(120)(2x)+(120)(−2)=240(Distribute)

240x+−240=240

240x−240=240

Step 2: Add 240 to both sides.

240x−240+240=240+240

240x=480

Step 3: Divide both sides by 240.

240x /240 = 480 /240

x=2

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Answer:

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Step-by-step explanation:

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3 years ago

Which product is positive?

Natalija [7]

Option D:

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Solution:

If the negative sign is in even number of times then the product is positive.

If the negative sign is in odd number of times then the product is negative.

To find which product is positive:

Option A:

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Here, number of negative signs = 3

3 is an odd number.

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Option B:

$$\left(-\frac{2}{5}\right)\left(\frac{8}{9}\right)\left(-\frac{1}{3}\right)\left(-\frac{2}{7}\right)$

Here, number of negative signs = 3

3 is an odd number.

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Option C:

$$\left(\frac{2}{5}\right)\left(\frac{8}{9}\right)\left(\frac{1}{3}\right)\left(-\frac{2}{7}\right)$

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So, the product is negative.

Option D:

$$\left(-\frac{2}{5}\right)\left(-\frac{8}{9}\right)\left(\frac{1}{3}\right)\left(\frac{2}{7}\right)$

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$\left(-\frac{2}{5}\right)\left(-\frac{8}{9}\right)\left(\frac{1}{3}\right)\left(\frac{2}{7}\right)$ is positive product.

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Answer:

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