Answer:
(a+bi)×(b+ai)
=>ab+a²i+b²i+abi²
=> ab+(-1)ab+(a²+b²)i
=>(a²+b²)i
so we can say it is purely imaginary number
hope it helped!
For the first letter drawn, there are no conditions/restrictions we need to consider. So, the number of ways to draw an i is:
For the second draw, the i is not replaced. That means, we've shrunk the sample space because we're dealing with less elements for the second draw. Firstly, one i disappears since we picked an "i" and there are 10 elements left, not 11.
Thus, to draw the second i, we have:
The equation that represents a proportional relationship is m = -0.5b
<h3>
Proportional relationship</h3>
Two variables are said to be proportional if an increase in one variable leads to an increase in other variable and a decrease in one variable leads to an decrease in other variable.
Given that m ∝ b
m = kb
When m = 3, b = -6, hence:
3 = -6k
k = -0.5
m = -0.5b
Find out more on Proportional relationship at: brainly.com/question/15400901
Answer:
It is -22.3
Step-by-step explanation:
Since it is subtraction, the answer must be smaller than -13.4. -4.5 is bigger than -13.4 so it is incorrect. The answer is -22.3
An exponent signifies repeated multiplication.
the factor x is repeated 3 times
Exponents can be added and subtracted to express the effects of multiplication and division.
The addition and subtraction of exponents works the same even when there are more denominator factors than numerator factors.
That is, a negative numerator exponent is the same as a positive denominator exponent and vice versa. You can move a factor with an exponent from denominator to numerator and change the sign of the exponent, and vice versa.
Your expression has 3 in the denominator with a negative exponent. It can be moved to the numerator and the exponent changed to positive: