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3 years ago

Ok I’m sorry but this is the last question. I need help please

Mathematics

1 answer:

Lynna [10]3 years ago

7 0

Answer:

19%

Step-by-step explanation:

The first discount is the 10% off.

An item costs 100% of its original price. By discounting 10%, the discounted price is now only 90% of the original price.

The price is now 90% of the original price. This is before the coupon is used.

Now we use the coupon. The coupon is 10% off of the discounted price.

That means now you will pay 90% of the discounted price.

The discounted price is 90% of the original price, so after the 10% coupon, you pay 90% of 90% of the original price.

90% * 90% = 0.90 * 0.90 = 0.81 = 81%

After the discount and the coupon, you pay 81% of the original price.

The price before the discount and the coupon was 100% of the original price.

Now the price is 81% of the original price.

100% - 81% = 19%

The final price has a total percent of discount of 19%.

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3 years ago

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dalvyx [7]

Answer with Step-by-step explanation:

We are given that

$f(x)=\frac{3x-1}{x}$

For each real number $x\neq 0$

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Proof:Let $x_1$ and $x_2$ be any nonzero real numbers such that

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By using the definition of f to rewrite the left hand side of this equation

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Equating the expression then we get

$\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}$

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$3x_1x_2-3x_1x_2+x_1=x_2$

$x_1=x_2$

Therefore, f is one-to-one.

6 0

3 years ago

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m_a_m_a [10]

Answer:

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Explanation:

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"(0, 5) is located at the origin" is not true because the origin is at (0, 0).

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kolezko [41]

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Step-by-step explanation:

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