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prisoha [69]
3 years ago
8

In a sale, normal prices are reduced by 10%.

Mathematics
1 answer:
Luda [366]3 years ago
4 0
You do 54/x = 90%/100. As prices are reduced by 10%, 54 is 90% of the original number. After cross multiplying you get 5400=0.9x. Which turns into 6000. Adding the decimal point back on you get £60.00.

So the original price of the shoes is £60.00.

Checking: all you have to do is take 10% of 60, which is 6 and subtract 6 from 60 to get 54. Thus, 60 is your answer.

Hope this helps!
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What is a Subset(It should be in the simplest form)
NISA [10]

Answer:

1 : a set each of whose elements is an element of an inclusive set. 2 : division, portion a subset of our community.

Step-by-step explanation:

In mathematics, set A is a subset of a set B if all elements of A are also elements of B; B is then a superset of A. It is possible for A and B to be equal; if they are unequal, then A is a proper subset of B. The relationship of one set being a subset of another is called inclusion

hope this helps

8 0
3 years ago
Please help I don’t really understand how to go about it.
Airida [17]
\bf \textit{sum of an arithmetic sequence}
\\\\
S_n=\cfrac{n(a_1+a_n)}{2}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
----------\\
S_n=795\\
a_1=102\\
a_n=57
\end{cases}
\\\\\\
795=\cfrac{n(102+57)}{2}\implies 1590=159n
\\\\\\
\cfrac{1590}{159}=n\implies 10=n\\\\
-------------------------------

so the nth term is really the 10th term, and we know that's 57, thus

\bf n^{th}\textit{ term of an arithmetic sequence}
\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
n=10\\
a_{10}=57\\
a_1=102
\end{cases}
\\\\\\
57=102+(10-1)d\implies 57=102+9d\implies -45=9d
\\\\\\
\cfrac{-45}{9}=d\implies -5=d

so, that's the common difference... .so you'd surely know what the 3rd term is, notice the first one is 102.
3 0
3 years ago
You want to frame a picture that is 5 in by 7 in with a 1 in wide frame. What is the perimeter of the outside edge of the frame?
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94 if your using the whole frame the math is 5×7=35 we have 2 sides do times 35 by 2 35×2=70 then we do 1×7=7 for the outside of the game then do 7 times 2 b/c you have 2 sides the do your final side by doing 5×1=5 then times that by 2 and you get 10 .70+14+10=94
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4 years ago
The submarine is 217 feet below sea level. Identify the integer
Sever21 [200]

Answer:

okay

Step-by-step explanation:

6 0
3 years ago
Identify the factors of x2 − 5x − 24.
vladimir2022 [97]
(x-8)(x+3) here we go.
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