Answer:
When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative.
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
The total price for 5 days
First, calculate the total for a day.


Open bracket

For 5 days, the total will be.
Total = days * sales of a day
So, we have:
![Total = 5 * [ 125x^3 + 25x^2 + 25x]](https://tex.z-dn.net/?f=Total%20%3D%205%20%2A%20%5B%20125x%5E3%20%2B%2025x%5E2%20%2B%2025x%5D)

Answer:
-xy+5x2(power of x is 2)y
Step-by-step explanation:
-xy+5x2y
Answer:
20 apples
Step-by-step explanation:
First, there are 320 apples that need to be split up between the siblings. We are first working with percentages. The total amount will be 100 percent. James has 45% and his brother has 30%. 45% + 30% is 75%. We subtract that from 100% and get 25%. That means that Eden gets 25% of 320 apple's. That's 320 * .25 or 320 / 4. That is 80 apples for Eden. If she gives 75% of her 80 apples, that means she gives 60 apples away. 80*.75 = 60. Eden would then only have 20 apples left. 80-60=20.