The length of the radius would sqrt(1+4), or sqrt(5).
2
The angle would be in Quadrant II and would be arctan ------ , or arctan (-2).
-1
Find this angle using a calculator or table.
Then you end up with -1+2i = sqrt(5) angle arctan(-2). The angle would be + and measured from the + horizontal axis.
You are adding by 0.50 every time because when you are working with negative numbers, adding makes the value of the negative number smaller.
Step-by-step explanation:
When Delta(b^2-4ac) is greater than 0, the quadratic equation has two distinct real solutions, when it is equal to 0, the quadratic equation has one real solution, when it is negative, it has no real solutions.
Answer: $4
Step-by-step explanation:
The soft drink was 4 dollars so you subtract that from the twenty dollars.
20-4=16
You bought four candy bars so you divide the remaining 16 dollars by 4.
16/4=4
Therefore, each candy bar costs $4.