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2 years ago

Answered If y = 3x and 2x – 4y = 3, then x=

Mathematics

1 answer:

Evgesh-ka [11]2 years ago

6 0

Answer:

Step-by-step explanation:

putting value

2x - 4(3x) =3

2x- 12x = 3

-10x = 3

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2 years ago

Can some help me with this

Oksana_A [137]

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2 years ago

Select all the numbers that are equivalent.

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3 years ago

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The average weight of 3 containers A,B and C is 3.2kg. Container A is twice as heavy as container B. Containers B is 400 g heavi

dlinn [17]

Answer:

The weight of container C is 2.1kg.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

x is the weight of container A.

y is the weight of container B.

z is the weight of container C.

The average weight of 3 containers A,B and C is 3.2kg.

This means that the total weight is 3*3.2 = 9.6kg. So

$x + y + z = 9.6$

Container A is twice as heavy as container B.

This means that $x = 2y$ .

Containers B is 400 g heavier than container C.

400g is 0.4kg. So

This means that $y = z + 0.4$ , or $z = y - 0.4$

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$x + y + z = 9.6$

$2y + y + y - 0.4 = 9.6$

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Container C

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2 years ago

How to understand supplementary and complementary angles.

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3 years ago