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3 years ago

F - 8/9 = 5/9 so what is f

Mathematics

2 answers:

worty [1.4K]3 years ago

7 0

Answer:

13/9

Step-by-step explanation:

transfer 8/9 0n 0ther side we get

f=5/9 +8/9

9 is lcm and 9 divides 9 1 times so bot will be multiplied by 1

f=(5+8)/9

f=13/9

Oduvanchick [21]3 years ago

6 0

Answer:

f = 13/9

Step-by-step explanation:

$f - \frac{8}{9} = \frac{5}{9} \\f = \frac{5}{9} + \frac{8}{9} \\f = \frac{5 + 8}{9}\\f = \frac{13}{9}$

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2 years ago

Rosa is making a poster that has a rainbow as part of the design. Using a compass she draws a semicircle with a radius of 18 cm.

Keith_Richards [23]

Answer:

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Step-by-step explanation:

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To find the area of the shaded area we are going to want to find the area of the whole semi circle and subtract it by the area of the smaller semi circle

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For the large semi circle

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$A=\frac{\pi 18^2}{2} \\18^2=324\\324\pi =1017.87602\\\frac{1017.87602}{2} =508.9380099$

So the area of the whole semi circle is 508.9380099 cm²

Now to find the area of the smaller semi circle

The radius for the smaller semi circle is 12 cm so we plug in 12 into r in the formula

$A=\frac{12^2\pi }{2} \\12^2=144\\144\pi =452.3893421\\\frac{452.3893421}{2} =226.1946711$

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Finally we want to subtract the area of the smaller semi circle from the area of the whole semi circle

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Finally we want to round to the nearest tenth and we get that the area of the rainbow is 282.7 cm²

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3 years ago