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maxonik [38]
2 years ago
5

4) Allison practices her violin for at least 12 hours per week. She practices for three fourths of an hour each

Mathematics
2 answers:
zaharov [31]2 years ago
7 0

Answer:

12

Step-by-step explanation:

So, she practices 12 hrs per week, and already has practiced 3 hrs this week.

This means she has 9 hrs left to practice.

3/4 of an hour is one session, so to find out the number of sessions she needs, you have to do (9 hours)/(one session)

which is basically 9 / ( 3/4)

\frac{9}{3/4}=\frac{9}{1} / \frac{3}{4}  = \frac{9}{1} * \frac{4}{3} = \frac{36}{3}  = 12

She needs 12 more sessions.

harina [27]2 years ago
6 0
She needs to complete at least 16 lessons every week to reach 12 hours per week.
She has completed 3 hours / 4 lessons.
she needs to complete 12 more lessons to meet her weekly goal.
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What is the factorization of the trinomial below?<br> -x2+ x + 42
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-(x + 6)(x - 7)

Step-by-step explanation:

The expression that we have can also be expressed in the following way:

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Now to factorize we must find two numbers that multiplied by -42 and the sum of these numbers by -1.

these numbers are: -7 and 6

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Thus:

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3 years ago
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3 years ago
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Dafna1 [17]
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HELP ME!! SOMEBODY PLEASE HELP ME
IRISSAK [1]
6^2 = x (x - 9)
x^2 - 9x - 36 = 0
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so in this case x = 12 then DC = 12 - 9 = 3

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3 years ago
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