Help me to do this question plz

Mathematics

1 answer:

Scrat [10]3 years ago

3 0

Step-by-step explanation:

<h2>questions no 1</h2>

U={a,e,i,o,u}

A={a,e,o}

A=U-A

={a,e,i,o,u} - {a,e,o}

={i,u}

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3 years ago

70 decreased by 13% =

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If you have a calculator:
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Therefore 70 - 9.1 = 60.9 

If you don't have a calculator: 
1) Find 50%, 10%, 5%, and 1%. With these, you can make any % you need. 
50% = X / 2 (= 35) 
10% = X / 10 (= 7) 
5% = first, do 10%, then divide that by 2 (= 3.5) 
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Where X is the number you want to work out % for 

2) Add those % up to get the amount you want 
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Therefore 70 - 9.1 = 60.9
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