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salantis [7]
3 years ago
5

the line y=mx+c passes through the points (1,1) and (2,3). find m and c using simultaneous equations.

Mathematics
1 answer:
zvonat [6]3 years ago
5 0

Answer:

m = 2, c = - 1

Step-by-step explanation:

Using the point (1, 1), substitute x = 1, y = 1 into the equation

m + c = 1 → (1)

Using the point (2, 3), substitute x = 2, y = 3 into the equation

2m + c = 3 → (2)

Subtract (1) from (2) to eliminate c

(2m - m) + (c - c) = (3 - 1) ← simplify

m = 2

Substitute m = 2 into (1) for corresponding value of c

2 + c = 1 ( subtract 2 from both sides )

c = - 1

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3 years ago
The value of 2 in2,783 is what timesthe value of 2 in 7,283
VikaD [51]
The value of 2 in 2,783 is thousand. The value of 2 in 7,283, is hundred. 
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Rachel and Hugo sorted 265 crayons each box had 10 crayons how many crayons are left?
ryzh [129]

Answer:

20

Step-by-step explanation:

6 0
3 years ago
CUALES SON LOS GRADOS PARA HACER UNA GRAFICA DE PASTEL, CON LOS SIGUIENTES PORCENTAJES( 20%,50%,10%)
svlad2 [7]

Answer:

Lo primero que debemos saber, es que la gráfica de pastel nos permite dividir a una población, la cual sería el 100%, en porcentajes menores que representan algo.

En este caso tenemos los porcentajes 20%, 50%, 10%  (notar que no suman 100%, entonces nos falta algún porcentaje)

Bueno, como sabemos el gráfico (el cual es un círculo) representa el 100%.

Y en un círculo, tenemos un ángulo de 360°

Entonces comenzamos con la equivalencia:

360° = 100%

Entonces, ¿a que grado corresponde el 50%? Planteamos la ecuación:

x = 50%

Si tomamos el cociente entre las ecuaciones:

x = 50% y  360° = 100%

obtenemos:

x/360° = 50%/100%

resolviendo para x, obtenemos:

x = (50%/100%)*360° = 0.5*360° = 180°

Para los otros porcentajes hacemos lo mismo.

Para el de 20% tenemos:

y = 20%

planteamos la ecuación:

y/360° = 20%/100%

y = 0.2*360° = 72°

Finalmente, para el de 10% tendremos:

z = 10%

planteando la ecuación como antes:

z/360° = 10%/100%

z = 0.1*360 = 36°

Asi, hemos encontrado los grados correspondientes para cada porcentaje.

8 0
3 years ago
Which statement describes the relationship between x and y?
stich3 [128]

Answer:

as x increases, y increases

Step-by-step explanation:

3 0
3 years ago
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