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Pavlova-9 [17]
3 years ago
6

The seventh-grade students need to raise at least $5,000 for their class trip. They were given

Mathematics
2 answers:
Ivenika [448]3 years ago
8 0
5000-850=
$4150 left to raise


$4150/83 students=
$50/student
FinnZ [79.3K]3 years ago
8 0

Answer:

$50

Step-by-step explanation:

First you subtract 850 from 5000 to find out how much money the students have left to raise. You should get $4150. You then divide 4150 by the 83 students and you find that each student is responsible for raising $50.

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Firlakuza [10]

Answer:

x\geq -8

Step-by-step explanation:

-9x+8\leq 80

       -8      -8

₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

\frac{-9x}{-9} \leq \frac{72}{-9}

     ⇵  

x\geq -8

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3 years ago
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Given that 2y^3+by-cy+d,where b,c and d are constants,leaves a remainder R when divided by (y+1) , (y-2) and (2y-1). Find the va
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The polynomial remainder theorem says that a polynomial <em>p(x)</em> leaves a remainder of <em>p(k)</em> when it's divided by <em>x</em> - <em>k</em>.

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<em>p</em>(-1) = 2(-1)³ + <em>b</em>(-1)² - <em>c</em>(-1) + <em>d</em> = <em>R</em>

==>  <em>R</em> = -2 + <em>b</em> + <em>c</em> + <em>d</em>

<em>p</em>(2) = 2(2)³ + <em>b</em>(2)² - <em>c</em>(2) + <em>d</em> = <em>R</em>

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==>  <em>R</em> = 1/4 + <em>b</em>/4 - <em>c</em>/2 + <em>d</em>

<em />

We're also given that <em>y</em> + 2 is a factor, which means dividing <em>p(y)</em> by it leaves no remainder, and so

<em>p</em>(-2) = 2(-2)³ + <em>b</em>(-2)² - <em>c</em>(-2) + <em>d</em> = 0

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<em />

Solve the system of equations in boldface. You can eliminate <em>d</em> from the first 3 to first solve for <em>b</em> and <em>c</em>, then solve for <em>d</em> :

(-2 + <em>b</em> + <em>c</em> + <em>d</em>) - (16 + 4<em>b</em> - 2<em>c</em> + <em>d</em>) = <em>R</em> - <em>R</em>

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<em>d</em> = 22

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