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Mathematics 9 Online
OpenStudy (anonymous):

PLEASE HELP WILL GIVE MEDAL!

OpenStudy (anonymous):

Chase plays the piano and the cello. For every 2 hours he practices the piano, he practices the cello for 3 hours. If he practiced the piano for 7 hours last week, how many hours did he spend practicing the cello? A. 21 B. 10.5 C. 6 D. 42

OpenStudy (kropot72):

The first step is to find out how many intervals of 2 hours are in the 7 hours of piano practice. This is done by the following division: number of 2 hour intervals = 7/2 For each of these 7/2 intervals he practices the cello for 3 hours. Therefore the number of hours of cello practice is given by: \[\large \frac{7}{2}\times3=\frac{7\times3}{2}=you\ can\ calculate\]

OpenStudy (anonymous):

i dont get it @kropot72

OpenStudy (kropot72):

Which part do you have trouble in understanding?

OpenStudy (anonymous):

like i tried calculating the last thing you gave me and i dont get anything

OpenStudy (kropot72):

Lets do the calculation in steps. First the numerator:\[\large 7\times3=?\]

OpenStudy (kropot72):

Can you multiply 7 by 3?

OpenStudy (kropot72):

@js7474 Are you there?

OpenStudy (anonymous):

hi ya sorry my computer died

OpenStudy (anonymous):

@kropot72

OpenStudy (kropot72):

Can you multiply 7 by 3?

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