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rewona [7]
3 years ago
6

What is the value of y in the solution to the system of equations? *x+3y=1 2x – 3y = -30

Mathematics
1 answer:
Delvig [45]3 years ago
8 0

Answer:

\large\boxed{y=\dfrac{32}{9}}

Step-by-step explanation:

\underline{+\left\{\begin{array}{ccc}x+3y=1\\2x-3y=-30\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad3x=-29\qquad\text{divide both sides by 3}\\.\qquad x=-\dfrac{29}{3}\\\\\text{put the value of x to the first equation}\\\\-\dfrac{29}{3}+3y=1\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\left(-\dfrac{29}{3\!\!\!\!\diagup_1}\right)+(3)(3y)=(3)(1)\\\\-29+9y=3\qquad\text{add 29 to both sides}\\\\9y=32\qquad\text{divide both sides by 9}\\\\y=\dfrac{32}{9}

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4 years ago
AD=3, BD=5, AE=4. Find CE
EastWind [94]

Answer:

6.6

Step-by-step explanation:

Triangles ADE and ABC are similar.

Therefore,

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3 years ago
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3 years ago
A classmate simplifies the expression in exercise 1. is the expression he wrote equivalent to the original expression? explain.
AlladinOne [14]
Excercise 1:

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Excercise 4:
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3 years ago
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PSYCHO15rus [73]
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Then, divide both sides of the inequality by 10.45
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6 0
3 years ago
Read 2 more answers
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