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2 years ago

Someone please help even if u just answer one of the questions :)

Mathematics

1 answer:

Advocard [28]2 years ago

3 0

1. E
2(a+2b+3c)= 2a+4b+6c you will distribute the 2 into a, b, and c which you will multiply.
2 x a = 2a
2 x 2b = 4b
2 x 3c = 6c

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When x-y=3 work out the value of y-x

GalinKa [24]

The value of y-x is (-3)

<u>Solution:</u>

Given: The value of x-y=3

To find: The value of y-x

$\bold{x-y=3\rightarrow (1)}$

Let's multiply the equation (1) by (- 1) on both sides,

$\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}$

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On multiplying the sign,

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The above equation can also be written as,

$\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}$

<u>Multiplication of signs:</u>

$\Rightarrow( + )\times( + ) = ( + )$

$\Rightarrow( + )\times( - ) = ( - )$

$\Rightarrow( - )\times( + ) = ( - )$

$\Rightarrow( - )\times( - ) = ( + )$

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

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2 years ago

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Evgesh-ka [11]

Answer:

20 in

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2 years ago

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dmitriy555 [2]

Answer:

1/4 miles.

Step-by-step explanation:

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frozen [14]

4x/15 = 60/x
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