Answer:
The last one for the x column 12.8, and the last two for the y columns are 16 and 64.
Step-by-step explanation:
So you know that you have to multiply 0.8 by 4 to get 3.2, right? If you have to multiply 0.8 by 4, that means that you also have to multiply 4 by 4.
Sorry I'm not a great teacher :/
Hope this helps!
Answer:
-0.8 - 0.5b - 1.4c
Step-by-step explanation:
Take the b and the c away
Then times the 0.2 by all the numbers but don't add them
Once your done you and the b and c back to you equation
Whenever you are given a cubic equation, or any equation, you always have to arrange it in a standard form first. For example, if you are given something like this, 3x2 + x – 3 = 2/x, you will re-arrange into the standard form and write it like, 3x3 + x2 – 3x – 2 = 0. Then you can solve this by any suitable method.
Part 1. Your friend is not right because 1\5 is equal to 20%, which is not equal to 25%.
Part 2. The service fee is $18.60 because 10% of 186 is 18.6
