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Mademuasel [1]
2 years ago
8

3. Solve the system of equations using linear combination. a + c = 9 8a + 4.5c = 58

Mathematics
2 answers:
sergij07 [2.7K]2 years ago
7 0
A+c=9 so a=9-c
8(9-c)=72-8c+4.5c=58
12.5c=58-72
12.5c=-14
c=-1.12
lana66690 [7]2 years ago
5 0
Hey I have posted a picture the method I use to solve simultaneous equations is change the sign and follow the new sign.
This involves changing the sign for the second equation and solving it

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8 0
3 years ago
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mario62 [17]

Answer:

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Step-by-step explanation:

m=-12g+x

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3 0
3 years ago
Al llegar al hotel nos an dado un mapa con los lugares de la ciudad nos dijieron que 5 cm del mapa que representaban 600 metros
Sati [7]

Pregunta completa:

Al llegar al hotel nos an dado un mapa con los lugares de la ciudad nos dijieron que 5 cm del mapa que representaban 600 metros de la realidad hoy queremos ir a un par que que se encuentra a 8 cm del hotel en el mapa. ¿A qué distancia del hotel está la pareja?

Respuesta: 960m

Explicación paso a paso:

Dado que:

5 cm en el mapa equivale a 600 m en tierra Por lo tanto,

8 cm en el mapa será equivalente a:

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Usando la multiplicación cruzada

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y = 4800/5

y = 960m

Por lo tanto, 8 cm en el mapa serán 960 m en realidad.

8 0
3 years ago
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Answer: Hewo, there! your answer is Below

a 90 clockwise rotation about the origin and a reflection over the y-axis

Step-by-step explanation:

Hope this helps you !!!

Have a great day!!!

3 0
2 years ago
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Nadya [2.5K]

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So, we can divide 26.55 by 9 to find the price per 1 pan of glass.

26.55/9 = 2.95, or $2.95 per pane of glass.

Now, we want to know how much it will cost for 4 panes of glass. Simply multiply 2.95 by 4.

2.95 x 4 = 11.8, or $11.80 for another 4 panes of glass.

8 0
3 years ago
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