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kipiarov [429]
3 years ago
6

4(5t - 7)=10t+2 how to simplify equation

Mathematics
1 answer:
prohojiy [21]3 years ago
7 0
20t-28=10t+2⇔20t-10t=2+28⇔10t=30⇔t=3
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In which equation does the vertex have a negative x coordinate? select all that apply.
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Which expression models this phrase? 27 decreased by the difference of a number and 3 A. (n – 3) – 27 B. 27 – n + 3 C. 27 – (n –
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5 0
3 years ago
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zimovet [89]

Answer:

x=\frac{1}{2}\\\\y=-6

Step-by-step explanation:

Given the following system of equations:

\left \{ {{4x-11y=68} \atop {6x+5y=-27}} \right.

In order to solve the system of equations using the Elimination Method, you can follow these steps:

- Multiply the first equation by -6 and the secondd equation by 4.

- Add both equations.

- Solve for "y".

Then:

\left \{ {{-24x+66y=-408} \atop {24x+20y=-108}} \right\\.........................\\86y=300\\\\y=\frac{-516}{86}\\\\y=-6

- Substitute the value of "y" into one of the original equations and solve for "x":

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4 0
3 years ago
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