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Soloha48 [4]
3 years ago
6

PLS HELPPPPP Which expression is equivalent to 4−a−a−a?

Mathematics
1 answer:
sammy [17]3 years ago
5 0

Answer:  " 4 − 3a " .

________

<u>Step-by-step explanation</u>:

" 4 − a − a − a " ;

        = 4 − 1a − 1a − 1a " ;

        =  ?  " ;

________

Combine the "like terms" :

________

         →   " − 1a − 1a − 1a " ;

               = (− 1a − 1a) − 1a ;

               = ( − 2a) − 1a ;

               =  − 3a ;

________

Now, bring down the "4" ;

  and rewrite the expression:

________

        →  " 4 − 3a " ;

which cannot be simplified further.

________

The answer is:  " 4 − 3a " .

________

Hope this is helpful!

 Best wishes to you!

________

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A rectangle has a perimeter of 103.6 inches and a base of 39 inches. What is the height?
rusak2 [61]

Answer:

12.8 IN.

Step-by-step explanation:

So, what exactly is perimeter?

Perimeter= 2L+ 2W

In this question we were given the length.ie.Base and the perimeter itself.

●Length is 39 In.

●Perimeter is 103.6 In.

●We don't know the width.

But, as per given the question, we know that;

1 length = 39 In.

2 lengths= 78 In.

Now that we know the <u>total</u><u> </u><u>length</u><u> </u><u>we</u><u> </u><u>can</u><u> </u><u>find</u><u> </u><u>the</u><u> </u><u>total</u><u> </u><u>width</u><u>.</u>

See as follows,

103.6 - 78= 25.6

<u>2</u><u> </u><u>widths</u><u>=</u><u> </u><u>25</u><u>.</u><u>6</u>

<u>1</u><u> </u><u>width</u><u>=</u><u> </u><u>25</u><u>.</u><u>6</u><u>÷</u><u>2</u>

<u>=</u><u>12</u><u>.</u><u>8</u><u> </u><u>In</u>

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The scale factor is 2.
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Put in 9x4x3x2=216     easy 2 solve but hard 2 find
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