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vladimir2022 [97]
3 years ago
12

Katie and becca each bought a new book for $50 . Katie sold her book to the bookstore for 25% less than the original price. . Be

cca sold her book to the used bookstore for 40% less than the original price Enter how much more money in dollars Katie received for her book than becca received for her book
Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
4 0

\text{Lets find the prices in which they sold their books for}\\\\\text{Katie:}\\\\\text{She sold the book for 25\% less than the original price, so multiply 50 by}\\\text{0.25 and subtract}\\\\50*0.25=12.5\\\\50-12.5=37.50\\\\\text{Becca:}\\\\\text{Becca sold the book for 40\% less than the original price, calculate how}\\\text{much she sold it for}\\\\50*0.40=20\\\\50-20=30\\\\\text{We need to find how much more money Katie made than Becca, so subtract}\\\text{Becca's cost from Katie's cost}\\\\37.50-30=7.50\\\\\boxed{\text{Katie received \$7.50 more than Becca}}

Ira Lisetskai [31]3 years ago
3 0

Answer: $17,5

Step-by-step explanation:

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Answer:

In the world of exponents, 4 is the number being raised by the exponent, which is 2.

Let's answer the first question:

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4^2= 4*4 = 16

So, it would be 16.

Let's answer the second question:

What if the exponent is -2?

<u>This is the rule for negative exponents:</u>

a^{-x}=\frac{1}{a^x}

Using this rule, we can solve 4^{-2}.

4^{-2}= \frac{1}{4^2}=\frac{1}{16}

So, our answer for the 2nd question is 1/16.

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3 years ago
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3 years ago
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8x - 4y = -12 

4(2x-y)=-12&#10;&#10; &#10;   Factor \ out \ the \ common \ term \ 4

2x-y=- \dfrac{12}{4}    Divide \ both \ sides \ by \ 4

2x-y=-3&#10;&#10; &#10;&#10; 

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3 years ago
How do you solve x+(2x + 40) + (3x - 50) = 15002
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2. Add the X’s together.
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3. Subtract 50 from 40.
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4. Move -10 to the right hand side to make it positive.
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5. Add 15002 and 10 together.
6x=15012

6. Divide 15012 by 6. Which makes the answer X=2502
6 0
3 years ago
Read 2 more answers
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