2 years ago

Ardi mempunyai uang Rp500.000,00 ia

Mathematics

1 answer:

miv72 [106K]2 years ago

5 0

Translate to english and i’ll help

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For the equation a(x+2)=-3x+b, if a=1 what value of b will make x=2

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Answer:

Step-by-step explanation:

replace x with 2 and you will got the answer...

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3 years ago

Marcelis takes a taxi to the airport. The taxi charges $2 per mile and an initial fee of

Marizza181 [45]

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13 miles

Step-by-step explanation:

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3 years ago

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3 years ago

Find a fraction equivalent to 5/7 whose squared terms add up to 1184.

bogdanovich [222]

The system of equations of two unknowns is formulated and solved.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left\{\begin{matrix} \ \ \ \dfrac{x}{y} = \dfrac{5}{7} \\ x^2+y^2 = 1184 \end{matrix}\right. \ \Longrightarrow \ x=\dfrac{5}{7}y } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left (\dfrac{5}{7}y \right )^2+y^2=1184\ \Longrightarrow\ 25y^2+49y^2=58016 } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{74y^{2}=58016} \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ \ y^{2}=784 } \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ y=\pm\sqrt{784}=\pm28 } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ x=\dfrac{5}{7}(\pm 28)=\pm 20 } \end{gathered}$}$

The fraction that satisfies the request is $\bf{\dfrac{20}{28}}$ , since in $\bf{\dfrac{-20}{-28}}$ the negative signs are canceled and the first fraction is obtained.

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1 year ago

Several students decide to start a T-shirt company after initial expenses of $280 they purchase each T-shirt wholesale for $3.99

JulsSmile [24]

10.99x = 3.99x + 280
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x = 40
They must sell 40 T-shirts to break even

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3 years ago

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