By definition, i = sqrt(-1) because it is used to solve the equation x^2+1 = 0 or x^2 = -1, which has no real number solutions.
Since i is imaginary or complex, then so is 2i
You can express it as 2i = 0+2i to be in the form a+bi with a = 0 as the real part and b = 2 as the imaginary component.
Answer:
one option could be : 7x+21 and 2
92% of students know what they're doing (598) and 8% are not sure (52) so it would be 52
$2.19 the third decimal number is a 5 so you round up the 8
I think you have it upside down.
When you solve a proportion, you cross multiply. You can have the same proportion just by interchanging 8 and b
a/8 = b / 15 When you cross multiply, you get
15a = 8b Try the given proportion to see what happens