3 years ago

1. Use the given key to answer the questions.

Mathematics

1 answer:

Eduardwww [97]3 years ago

8 0

Answer:

please where is the diagram

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A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount. If a jacket cos

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$200 plus 40% = $280

$280 minus 25% = $210

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Explanation is in the file

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3 years ago

What is 7 im so confused

erastova [34]

Answer:

7 weeks

Step-by-step explanation:

John saves f(x) = 60+5x

Sarah saves g(x) =x^2 +46

They save the same amount of money

Set the equations equal

60+5x =x^2 +46

Subtract 60 from each side

60+5x -60 =x^2 +46-60

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Subtract 5x from each side

5x -5x= x^2-5x - 14

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Factor

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Using the zero product property

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3 years ago

Reduce the following fraction: -32abc/64a^2bc^2

mafiozo [28]

Answer:

$-\dfrac{1}{2ac}$

Step-by-step explanation:

Given:

$\dfrac{-32abc}{64a^2bc^2}$

Reduce this fraction.

Work with numbers and different letters separately:

1. Numbers:

$\dfrac{-32}{64}=-\dfrac{32}{32\cdot 2}=-\dfrac{1}{2}$

2. Letter a:

$\dfrac{a}{a^2}=\dfrac{a}{a\cdot a}=\dfrac{1}{a}$

3. Letter b:

$\dfrac{b}b}=1$

4. Letter c:

$\dfrac{c}{c^2}=\dfrac{c}{c\cdot c}=\dfrac{1}{c}$

Hence,

$\dfrac{-32abc}{64a^2bc^2}=-\dfrac{1}{2}\cdot \dfrac{1}{a}\cdot \dfrac{1}{c}=-\dfrac{1}{2ac}$

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Step-by-step explanation:

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