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irinina [24]
3 years ago
7

Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of n

ineteen and a half hours. If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?
Mathematics
2 answers:
IgorLugansk [536]3 years ago
8 0

Answer:

2 hours per day

Step-by-step explanation:

Given : Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of nineteen and a half hours.

To Find : If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?

Solution :

Mary has rehearsed her ballet solo = 5\frac{1}{2} =5.5 hours

She wants to have rehearsed at least a total of 19\frac{1}{2} =19.5 hours

So, hours left for rehearsel = 19.5-5.5= 14 hours

If she rehearses for the same amount of time each day for the next 7 days

So, she rehearsed each day = 14/7 = 2 hours

Hence  she must rehearse for 2 hours per day

djverab [1.8K]3 years ago
3 0
The answer to this problem is 2
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faust18 [17]

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<u>Step-by-step explanation:</u>

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Often, the value of x is easiest to solve by a x^{2}+b x+c=0 by factoring a square factor, setting each factor to zero, and then isolating each factor. Whereas sometimes the equation is too awkward or doesn't matter at all, or you just don't feel like factoring.

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