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aivan3 [116]
3 years ago
10

Please help meThe question has 7 marks so please give 7 valid reasons

Mathematics
1 answer:
barxatty [35]3 years ago
5 0
Its a cube with dimensions 4 by "x+1" by "x+11"
So if you multiply all 3 of these you will get the total volume of 924.
So our equation is:
4(x+1)(x+11) = 924
(x+1)(x+11) = 231
x²+12x+11 = 231
x²+12x-220 = 0

Now factor to:
(x+22)(x-10) = 0
Thus x = -22 or 10.

Only 10 makes sense here since we can't have a negative length.  So x = 10.
Now plug in x back into our original expressions to get the dimensions.

The original dimesions are: 4cm x 11cm x 21cm

Ta-dah!

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Alexandra [31]
Hi,
The total amount is 17.91608
How I got my answer:
100 + tip%/100 * 14.56 = amount with tips
100 + 15/100 * 14.56
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Hope this Helps you.

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