Kate paid $27 for a dress that was on sale at 10% off. What was the original price for this dress?

Mathematics

2 answers:

Ivahew [28]3 years ago

6 0

Answer: 29.7

Step-by-step explanation:

Firstly since it’s 10% off, you can figure out how much the discount was easily. Move the decimal left. Your starting number is 27.0 so move it left and it becomes 2.7. That’s how much was taken off. Now you are wondering for full price so, you add 2.7 to 27 and you get your answer.

Art [367]3 years ago

5 0

Answer:

$30

Step-by-step explanation:

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Step-by-step explanation:

We have been given a function $f(x)=15x^3-15x^2-90x$ . We are asked to find the zeros of our given function.

To find the zeros of our given function, we will equate our given function by 0 as shown below:

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Now, we will factor our equation. We can see that all terms of our equation a common factor that is $15x$ .

Upon factoring out $15x$ , we will get:

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Now, we will split the middle term of our equation into parts, whose sum is $-1$ and whose product is $-6$ . We know such two numbers are $-3\text{ and }2$ .