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ikadub [295]
3 years ago
15

How do you calculate percentage? Is there an easier way?

Mathematics
1 answer:
san4es73 [151]3 years ago
6 0
Divide the numerator of the fraction by the denominator. the first two digits of the decimal is the percentage 
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If the scale factor between two circles is 7a/9b what is the ratio of their areas?
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the length of a rectangle is 4 more than 3 times the width. If the perimeter of the rectangle is 18.4cm, what is the area of the
antoniya [11.8K]

Answer:

A = 10.27cm²

Step-by-step explanation:

Let's represent the width as x,

therefore since the length is 4 more than 3 times the width, it can be represent as 3x + 4,   Perimeter = 18.4cm

Perimeter of a rectangle = 2(L + B)

18.4= 2(3x+4+x)\\18.4= 6x+8+2x\\18.4-8=6x+2x\\10.4=8x\\x=\frac{10.4}{8}\\x=1.3

width = 1.3cm

Length = 3x + 4 = 3*1.3 + 4 = 7.9cm

Area of a rectangle = length x width

A = 7.9 * 1.3 = 10.27cm²

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2 years ago
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Find y, at and tu I need help please help
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PLEASE HELP ME I DONT UNDERSTAND.
Bingel [31]

width = 7cm

Length= 41cm

width=x

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96=8x+40

56=8x

x=8


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2 years ago
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