The ratio indicates that there are 8 dolls for every 7 teddy bears. That means that if there is 16 dolls, then there is 14 teddy bears. And that if there is 24 dolls, then there is 21 teddy bears. You could continue this pattern, or you could divide and multiply. If you have 160 dolls, then do 160/8 to simplify the ratio. You get 20. So if there is (8x20) dolls, then there is (7x20) teddy bears. 7x20 is 140, so there are 140 teddy bears.
10=25% of a number
10=1/4 of a number
10=x*1/4
40=x*1=x
the number is 40.
The correct notation for the
is -84+10i.
Answer: Option B.
<u>Step-by-step explanation:</u>
A square root is the inverse function of exponential function.
Square root of positive numbers either result natural numbers or rational numbers.
But the square root of negative number is not possible. So that an imaginary number system was founded to represent the square root of negative number.
It is represented with i with the result of the solution of the square root.
Here the given problem is
,
-84 will remain the same and let us convert
.
can be written as
×
.
= 10
= i.
∴
=10i.
The correct notation for the
is -84+10i
<u></u>
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