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dusya [7]
4 years ago
8

Can you use elimination to solve a system of linear equations with three equations

Mathematics
2 answers:
crimeas [40]4 years ago
7 0
You can use elimination to solve systems of equations with 3 equations. I know how to solve systems of equatons with 3 equations, but I use a different process, I don't know how to use the elimination method.
Volgvan4 years ago
5 0
Yes, you can use Cramer's Rule.
The procedure for 2 unknowns AND 3 unknowns can be found here:
http://www.1728.org/cramer.htm





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Last year, Justin opened an investment account with $5400. At the end of the year, the amount in the account had increased by 6.
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$351 and $5751

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Given, Justin opened an investment account with $5400. At the end of the year, 6.5% increased. So, the total increase in the dollar is 5400* 0.065 = 351. The increase in the dollar is $364.

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If 3/5 Of the class like soccer what percent of the students like soccer
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Tres empleados de una empresa tienen que pagar 3100€ de impuestos entre todos de forma inversamente proporcional a su sueldo men
Illusion [34]

Answer:

La cantidad que Javier paga como impuesto, A es de 1.200 €

La cantidad que Antonio paga como impuesto, B es 900 €

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Step-by-step explanation:

Dejemos que 'A', 'B' y 'C', representen la cantidad que pagan Javier, Antonio y Elvira respectivamente, y que 'k' represente la constante de proporcionalidad, por proporcionalidad inversa, tenemos;

A = k / 1500, B = k / 2000, C = k / 1800

A + B + C = 3100

∴ k / 1500 + k / 2000 + k / 1800 = 3100

Simplificando la ecuación anterior usando una calculadora gráfica da;

31 · k / 18 000 = 3100

k = 18.000 × 3.100 / 31 = 1.800.000

k = 1.800.000

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La cantidad que paga Elvira como impuesto, C = 1.800.000 / 1.800 = 1.000

4 0
3 years ago
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