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goldfiish [28.3K]
3 years ago
15

Does anyone know why this math trick works? If so why then?

Mathematics
2 answers:
qwelly [4]3 years ago
7 0
It is actually based of of calculation, this isint really a trick its just and advance calculation system thats why you add and divite certain number :)


hope this helps ❤️
icang [17]3 years ago
6 0
You basically undoing everything you did. The questions simply hide that. I don't really know any more details...
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The width of a rectangle is 3/4 its length. The perimeter of the rectangle is 240 ft. What is the length, in feet, of the rectan
zalisa [80]

Answer: 51.4275 or 51.428571 (repeating decimals) feet

Step-by-step explanation:

P = perimeter

L = length

W = width

Represent W as  \frac{3}{4} L

Find L

P = 2L + 2W

240 = 2L + 2(\frac{3}{4}L)

240 = 2L + \frac{3}{2} L  or you can write 3/2 as 1.5

240 = 2L + 1.5L

240 = 3.5L

\frac{240}{3.5} L = \frac{3.5L}{3.5}

L =  ≈ 68.57 or 68.571428 (but this is <em>repeating decimals</em> so I rounded it)

Find W

\frac{3}{4} L

\frac{3}{4}  * 68.57 = 51.4275

Or if you want unrounded version 51.428571 (repeating decimals)

4 0
2 years ago
What is the decay factor of the exponential function represented by the table?
Nina [5.8K]

Answer:

Option 2 is correct.

Step-by-step explanation:

We have been provided a table of values of an exponential function and we are asked to find out the decay factor of the function.

Upon looking at our table we can see that every time x increases by one our y value remains one-third of the previous value.

To find out decay factor we will subtract 1/3 from 1.

1-\frac{1}{3} =\frac{3-1}{3} =\frac{2}{3}

Therefore, decay factor of the exponential function is \frac{2}{3} and option 2 is correct choice.

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This is the answer .

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