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Dmitriy789 [7]
3 years ago
7

Which students write the correct express

Mathematics
1 answer:
Lyrx [107]3 years ago
5 0

Answer: Madison is correct.

Step-by-step explanation:

4(2x+3y−5z)

=(4)(2x+3y+−5z)

=(4)(2x)+(4)(3y)+(4)(−5z)

=8x+12y−20z

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andrew-mc [135]
Tan t= 8/15
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3 years ago
Mariabella was 1/4 of the way through her book. Twenty pages later she was 1/3 of the way through her book. When she is 3/4 of t
Alex777 [14]

Answer: 60 pages left.

Step-by-step explanation:

Let the number of pages in the book be x.

As per given, we have

\dfrac14x+20=\dfrac13x\\\\\Rightarrow\ \dfrac{1}{3}x-\dfrac14 x=20\\\\\Rightarrow\ \dfrac{4-3}{12}x=20\\\\\Rightarrow\ \dfrac1{12}x=20\\\\\Rightarrow x=20\times12\\\\\Rightarrow x=240

\dfrac34 of total book = \dfrac34\times 240=180

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3 0
3 years ago
What ratios are equivalent to 12:3
nlexa [21]

Answer:

4:1

Step-by-step explanation:

8 0
3 years ago
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snow_lady [41]

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Step-by-step explanation:

that is the answer

8 0
3 years ago
Use the original price and the markup to find the retail price.
RSB [31]

Answer:

$40,50

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