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3 years ago

(3x-8) + (-4x+9) idk

Mathematics

1 answer:

lesya [120]3 years ago

8 0

Answer= 19

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Write a numerical expression : Sara catches 15 fish and lets o fish go"

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[15-0] would be a numerical expression for this. :P

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3 years ago

8y + 4x + 6y=? Plz help

postnew [5]

Answer:

idk, sorry about that one

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3 years ago

Read 2 more answers

After 3 hours of of driving, Paul had gone 183 miles. What was his average rate of speed? Explain your answer.

torisob [31]

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$s(av) = \frac{∆x}{∆t} \\$

$s(av) = average \: \: speed$

$∆x = covered \: \: distance$

$∆t = time \: \: of \: \: the \: \: covered \: \: distance \\$

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$s(av) = \frac{183}{3} \\$

$s(av) = 61 \: \: \frac{mile}{hour}$

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5 0

3 years ago

So here's the question

Lesechka [4]

Yes, is subtraction, to get their "difference".

first off, let's convert the mixed fractions, to "improper", and then subtract.

$\bf \stackrel{red~yarn}{9\frac{1}{5}}-\stackrel{blue~yarn}{3\frac{11}{25}}$

$\bf -------------------------------\\\\
\stackrel{mixed}{9\frac{1}{5}}\implies \cfrac{9\cdot 5+1}{5}\implies \stackrel{improper}{\cfrac{46}{5}}
\\\\\\
\stackrel{mixed}{3\frac{11}{25}}\implies \cfrac{3\cdot 25+11}{25}\implies \stackrel{improper}{\cfrac{86}{25}}\\\\
-------------------------------\\\\
\cfrac{46}{5}-\cfrac{86}{25}\impliedby \textit{our LCD is 25}\implies \cfrac{(5\cdot 46)~~-~~(1\cdot 86)}{25}
\\\\\\
\cfrac{230~-~86}{25}\implies \cfrac{144}{25}\implies 5\frac{19}{25}$

4 0

4 years ago

(3x-8) + (-4x+9)​ idk

(3x-8) + (-4x+9) idk