What percent of 1 3/5 is 0.2 and what percent of 2 is 0.2?

1 answer:

7 0

1 3/5 = 8/5
.2=2/100

make an equality:
x/(8/5)=2/100
it kinds looks weird on here but write it out on paper

then cross multiply:
100x=(2)(8/5)
100x=16/5

now divide each side by 100:
x=4/125

same for the second one:
make an equality:
x/2=2/100
cross multiply:
100x=(2)(2)
100x=4
x=1/25

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Domain is the set of inputs of a function on which the function is defined.

Given function is:

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In case of a function involving fraction, the function is undefined if the denominator is zero so in order to find the domain of the function algebraically , we have to find the values on which the function will be undefined

$x^2-x-2 = 0\\x^2-2x+x-2 = 0\\x(x-2)+1(x-2) = 0\\(x+1)(x-2) = 0\\x+1 = 0 => x=-1\\x-2=0 = > x=2$