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MA_775_DIABLO [31]
4 years ago
5

Natalie practices the piano every day on Monday she practice for 10 minutes if she practice everyday for 10 minutes on which day

of the week will she have practice for 90 minutes and explain
Mathematics
2 answers:
bulgar [2K]4 years ago
8 0
It would be on Tuesday because 10 * 9 is 90 and on Monday you add the amout of days that she practiced and that would be Tuesday.
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Ivahew [28]4 years ago
7 0
Tuesday. The reason is it is when you multiply 9 x10 it will give you 90. So, in order to calculate that you would have to add 9 days on a calendar.
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The sum of Cathy's and Tony's ages is 65. Eight years ago, Cathy's age was 2/5 of Tony's age. How old are they now?
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Let
x------> Cathy's<span> ages
</span>y------> Tony's ages

we know that
x+y=65-----> x=65-y-----> equation 1
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substitute equation 1 in equation 2
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1.4y=30.8-----> y=22
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the answer is
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