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Mademuasel [1]
3 years ago
9

Please help solve 16 to 19!!!I will give brainlist ​

Mathematics
1 answer:
Gennadij [26K]3 years ago
5 0

Answer:

Step-by-step explanation:

84.21

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By what percent will a fraction change if its numerator is decreased by 20% and its denominator is decreased by 60%?
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Answer:

The fraction will increase by 100%

Step-by-step explanation:

Say the fraction is x/y. The question is telling us to decrease x by 20% (i.e. 0.8x) and to decrease y by 60% (i.e. 0.4y):

= \frac{0.8x}{0.4y}\\= 2 (\frac {x}{y})

You can see that by applying these changes, the new fraction is actually double the old fraction (i.e. will increase by 100%).

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Step by step:

Divide 15 by 2: 15 ÷ 2 = 7.5
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4 years ago
Iven 5 different letters, how many different ways can you arrange 3 of them (whether they spell a word or not)
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