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padilas [110]
3 years ago
8

Molly owes her brother $300.She works for $10 per hour as a checker at the local grocery store.Molly plans to repay her brother

half of what she earns after taxes of 20% are taken out.Identify the expression which represents the condition described
Mathematics
2 answers:
gavmur [86]3 years ago
3 0

Answer: The expression which represents the condition described is given as  4x=300

Step-by-step explanation:

Since we have given that

Amount that Molly owes her brother = $300

Let the number of hours she worked as a checker be x

Cost of per hour = $10

Amount she get after doing work for x hours is given by

10x

Rate of tax are taken out = 80%

So, amount she left with is given by

\frac{100-20}{100}\times 10x\\\\=\frac{80}{100}\times 10x\\\\=8x

So, Molly plans to repay her brother half of what she earns is given by

\frac{8x}{2}=4x

According to question,

4x=300\\\\x=\frac{300}{4}\\\\x=75\ hours

So, the expression which represents the condition described is given as

4x=300

Alekssandra [29.7K]3 years ago
3 0
(.5)(.8)(10x) ≤ 300

she gives him half of 80% of her $10 an hour (x is hours) but only until she has given him $300

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Find an equation for the plane that contains the line v = (−1, 1, 2) + t(7, 6, 2) and is perpendicular to the plane 8x + 5y − 7z
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means that Π is perpendicular to the direction vector of the line L, namely
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means that &Pi; is also perpendicular to the normal vector of the given plane, vp=<0,5,-7>.

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 i  j  k
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Since &Pi; has to contain the line, it must pass through the point (-1,1,2), so the equation of the plane is
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