A copy machine averages 210 copies in 5 minutes at the same rate how many copies can machine making 12 minutes

Mathematics

1 answer:

bogdanovich [222]3 years ago

3 0

Answer:

504 Copies.

Explanation:

First you do 210 copies ÷ 5 minutes to tell you how many copies it will make per minute, that gives you 42 Copies per minute. Now lastly, you need to find how many it makes in 12 minutes. So if it does 42 Copies in one minute multiply 42 by 12 because there are 42 copies in one minute and you need to find how many it will make in 12 minutes so your answer is 42.

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Hey so im also looking for the first answer and the choices were “ is not “ and “ is “

dexar [7]

so the investigator found the skid marks were 75 feet long hmmm what speed will that be?

$s=\sqrt{30fd}~~ \begin{cases} f=\stackrel{friction}{factor}\\ d=\stackrel{skid}{feet}\\[-0.5em] \hrulefill\\ f=\stackrel{dry~day}{0.7}\\ d=75 \end{cases}\implies s=\sqrt{30(0.7)(75)}\implies s\approx 39.69~\frac{m}{h}$

nope, the analysis shows that Charlie was going faster than 35 m/h.

now, assuming Charlie was indeed going at 35 m/h, then his skid marks would have been

$s=\sqrt{30fd}~~ \begin{cases} f=\stackrel{friction}{factor}\\ d=\stackrel{skid}{feet}\\[-0.5em] \hrulefill\\ f=\stackrel{dry~day}{0.7}\\ s=35 \end{cases}\implies 35=\sqrt{30(0.7)d} \\\\\\ 35^2=30(0.7)d\implies \cfrac{35^2}{30(0.7)}=d\implies 58~ft\approx d$