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irakobra [83]
3 years ago
10

Jake cut out 3 small circles and 5 big circles from a piece of cardboard. The radius of each small circle was x inches and the r

adius of each big circle was y inches. The expression below shows the total number of square inches of cardboard that Jake used for cutting out the circles. 3πx2 + 5πy2 What does the term 5πy2 in the expression represent?
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
7 0
The term above represents the radius of both the circles
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0.6(4-2x)=20.5-(3x+10)
solong [7]

The solution of 0.6(4-2x)=20.5-(3x+10) is x = 4.5

<u>Solution:</u>

Given, expression is 0.6 ( 4 – 2x ) = 20.5 – ( 3x + 10 )

We have to solve the above given equation for x.

Now, take the equation  

\rightarrow 0.6(4-2 x)=20.5-(3 x+10)

We have to use BODMAS rule. BODMAS means sequence of operations which is brackets, order, division, multiplication, addition and then subtraction

On solving the brackets, we get

\rightarrow 0.6 \times 4-0.6 \times 2 x=20.5-3 x-10

Now multiplication is given preference

\rightarrow 2.4-1.2 x=10.5-3 x

\rightarrow 3 x-1.2 x=10.5-2.4

Now subtraction is done

\rightarrow 1.8 \mathrm{x}=8.1

Now division is performed

\rightarrow x=\frac{8.1}{1.8}=4.5

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