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VashaNatasha [74]
3 years ago
15

Solve the following system of equations using matrices: 4x + 5y = 40 X-y=1

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0
I think i’m not sure but i think the answer is (5,4) x=5 and y=4
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Ecuación 2:<br> 10x + 20y = 8000<br> ayudaaa
Elenna [48]

Answer:

y = 300

x = 200

Step-by-step explanation:

Esta pregunta parece incompleta, parece que acá tenemos un sistema de ecuaciones:

x + y = 500

10*x + 20*y = 8000

Estas ecuaciones tienen que resolverse en conjunto, y de acá sacaremos un par de puntos (x, y) que son solución para ambas ecuaciones.

El primer paso para resolver esto es aislar una variable en una de las ecuaciones, en este caso podemos aislar x en la primera ecuación y así obtener:

x = 500 - y.

Ahora podemos reemplazar eso en la segunda ecuación y obtener:

10*(500 - y) + 20*y = 8000.

Ahora resolvemos esto para y.

5000 - 10*y + 20*y = 8000

10*y = 8000 - 5000 = 3000

y = 3000/10 = 300.

Y sabíamos que:

x = 500 - y = 500 - 300 = 200

Entonces la solución es:

y = 300

x = 200

4 0
3 years ago
How can u use ratios and rates to solve problems
Free_Kalibri [48]

Answer:

Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane.

Step-by-step explanation:

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Answer:

the answer is 6

Step-by-step explanation:

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BabaBlast [244]

Answer:

tan β = \frac{8}{15}

Step-by-step explanation:

tan β = \frac{opposite}{adjacent} = \frac{AC}{BC } = \frac{8}{15}

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