2 years ago

3. 54

Mathematics

2 answers:

AnnyKZ [126]2 years ago

8 0

Answer:

18.C

19.C

Step-by-step explanation:

You need to either add them all first and then multiply them or you can multiply them one by one and then add them altogether

enot [183]2 years ago

7 0

Answer:

Step-by-step explanation:

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The length of a rectangle is twice it’s width if the perimeter of the rectangle is 54 cm

castortr0y [4]

Width = 9cm

Length = 18cm

<u>Explanation:</u>

Let width = b,

So, length = 2b

Perimeter of rectangle = 2x(length + width)

According to the question,

$54cm = 2X(2b + b)\\54cm = 2X(3b)\\27cm = 3b\\b = 9cm$

Hence,

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PLEASE HELP! Since AB=1 and 1=BC, BC=AB by which property?

erastovalidia [21]

Substitution.

Here is an example.

Let x be equal to 3 and y equal to 3.

$x=3, y=3$

From this we can conclude that the values of both x and y are equal to three therefore x and y have the same value and are equal.

$x\wedge y=3\Longrightarrow x=y$

Here in your case we have:

$AB=1, BC=1 \\AB\wedge BC=1\Longrightarrow AB=BC$

Hope this helps.

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Dmitry_Shevchenko [17]

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Step-by-step explanation: I hope this helps you!

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Two angles are supplementary when they add up to 180 degrees
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The answer is definately A

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