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For two ratios to form a proportion they have to be equal.
To see if two ratios are equal we express them in their simplest form.
In this case we notice that in the first ratio both numbers are multiples of five, then:
In the second case we notice that both numbers are multiples of 2, then:
Since both ratios can be simplified to the same final ratio, they form a proportion.
Answer:
4^-5
Step-by-step explanation:
4^-3 = 1/4^3
1/4^3 · 1/^2 = 1/4^5 which is the same as 4^-5
sum of 2 numbers is the answer / number you get after addiing the 2 numbers
we are told that sum of 8 and another number is 100
so lets call the other number x
so if we put this in an equation
8 + x = 100
we have to make x the subject of the formula as we need to find x
so we have to make x the only term on one side of the equation
for this we carry out the reverse operator for addition of 8 on both sides of the equation
reverse operator for addition is subtraction
x + 8 - 8 = 100 - 8
x = 92
the number is 92
