To simplify 4/(2+7i), we multiply it by a fraction equal to one that removes the i value in the denominator. The best value to do this is the complex conjugate divided by itself, so we have 4(2-7i)/((2+7i)(2-7i)). Simplifying, we have (8-28i)/(4-(-49))=(8-28i)/53, which is a completely simplified fraction since 8 and 53 are relatively prime (or coprime), and there are no radicals in the denominator.
Answer:
1. True 2. True
Step-by-step explanation:
1. all horizontal lines represent a function.
2. The equation y=2x+1 represents a function.
Answer:
10 1/2
Step-by-step explanation:
It is 46 if you divide 34 by 16 you get 2.125 then divide 100 by 2.125 and you get 47.05 the 0 means go down if you are rounding which brings it to 46
Answer:
16
Step-by-step explanation:
Adam is building birdhouses that requires 
i.e 0.5 feet long boards.
Now, he has an 
i.e. 8.25 feet longboard and wants to cut each 0.5 feet longboards.
We have to calculate the number of pieces of exactly 0.5 feet length that can be made from this 8.25 feet longboard.
Now, 
So, there can be 16 whole board of exact length 0.5 feet. (Answer)
