Mathematics
29.09.2020 10:30
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Given the equation 2x+ 2 y 4w+2, what is the value of x? O X = YW+y-1 O x= 2yway-1

Given the equation 2x+ 2
y
4w+2, what is the value of x?
O X = YW+y-1
O x= 2yway-1
O X = 2yW+y-2
OX= 4yW+ 2y-2
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Kingmoney959
Kingmoney959
4,8(32 marks)
Basically, proportions are equalities with fractions. If 1 mi. = 1.6 km, then 1mi./1.6km = 1. 

You want to know how many miles are in 112.6 km, that is X mi. = 112.6km. This is your equation. 

Since you already know that 1mi./1.6km = 1, you can multiply the equation by this fraction, and it won't change anything (any number times one is equal to itself, right?). So, X mi. = 112.6km * (1mi/1.6km). Really, all you're doing is dividing 112.6 by 1.6, which is 70.375. 

For your second question, you know that there are 9 people total on court. If there are 2 women, that leaves 7 men. The ratio of women to men is 2 to 7 (or 2/7). 

I hope that helps!

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