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liraira [26]
3 years ago
12

12/16 - 7/18 in simplest form​

Mathematics
1 answer:
Ivan3 years ago
6 0

Answer:

The answer is \frac{13}{36}

Step-by-step explanation:

The formula is:

\frac{a}{b} -  \frac{c}{d}  =  \frac{ad - bc}{bd}

In this case :

\frac{12}{16}  - \frac{7}{18} =  \frac{12 x 18 - 16x17}{16x18} = \frac{216 -112 }{288} = \frac{104}{288}

To get the simples form notice both 104 and 288 are divisible by 8 and 104/8 = 13 and 288/8 = 36.

Thus \frac{104}{288} = \frac{13}{36}

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Step-by-step explanation:

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Anna35 [415]
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8 0
4 years ago
What is the effect on the volume of a sphere if the radius is divided by 2?
uranmaximum [27]

Answer:

volume of sphere if radius is divided by 2 is 1/8 of volume of sphere with r radius.

Step-by-step explanation:

The formula to find volume of sphere is:

Volume of sphere  = 4/3 π r^3

if radius is divided by 2 i.e r/2

Volume of sphere if r/2 = 4/3 π (r/2)^3

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                                      =  (4/3 π r^3) / 8

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3 0
3 years ago
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Which is greater: 25% of 15 or 15% of 25? Explain your reasoning using algerbreaic representations or visual models
Bingel [31]
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15%=15/100
15% of 25=(15/100)25=(25*15)/100

Therefore:
25% of 15=15% of 25
because:
(25/100)15=(15/100)25
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3 years ago
the figure shows the dimensions of a room in which receptions are held. The room is being carpeted. The three semi-circular part
mars1129 [50]

Answer:

258.39 m^2

Step-by-step explanation:

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Now solve for the 3 semi circles:

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Add up the areas:

216 + 42.39 = 258.39

8 0
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