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lbvjy [14]
3 years ago
15

Justify the equality 28x101=28x100+28

Mathematics
1 answer:
dem82 [27]3 years ago
8 0
We can justify this in 2 ways:

1. Think about what 28 x 101 means. It means that you have 28 added together 101 times. Therefore if you have 28 added together 100 times and you add it again, it means 28 added together 101 times.

2. 28 x 101 = 28 x (100 + 1) = 28 x 100 + 28 x 1 = 28 x 100 + 28
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Explanation:
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So,

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Note:

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&,

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5 0
3 years ago
X = y−4, 2x−5y = 3
dalvyx [7]
X=y-4 Let's make this eqn 1 and

2x-5y=3 this eqn 2..


Two things are possible here...
Its either you substitute for x in equation 2... Or you substitute for y...

x=y-4 put this in the equation 2..

2x-5y=3.. Replace the x with (y-4)

2(y-4)-5y = 3...
Since this is In the option no point in substituting for y...

Hope this helped...?


5 0
4 years ago
(01.04)
Neko [114]
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4 years ago
Given that €1 =£0.72 a) how much is €410
alexira [117]

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Step-by-step explanation:

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3 0
4 years ago
Read 2 more answers
Add the following decimals 0.654+0.45
anzhelika [568]

When adding decimals you would line up the decimal points and fill blank spots with zeros.

so...

  0.654

+ 0.450

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

  <u>1.104</u>.

6 0
3 years ago
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