Answer:
The answer to your question is 20x + 21y + 14
Step-by-step explanation:
Data
Expression 1/5 (150x - 80y + 50 - 50x - 25y + 20)
Process
1.- Multiply 1/5 by each term
150/5x - 80/5y + 50/5 - 50/5x - 25/5y + 20/5
2.- Simplify
30x - 16y + 10 - 10x - 5y + 4
3.- Simplify like terms
(30x - 10x) + (-16y - 5y) + (10 + 4)
4.- Result
20x + 21y + 14
Answer:
His gain percent is 20%
Step-by-step explanation:
In this question, we want to find the percentage gain of the business.
We need the following parameters;
The cost price which is the sum of the amount she bought the goods + the amount spent on transport
Using the values we have in the question;
The cost price will be;
13,600 + 400 = Rs 14,000
The selling price = Rs 16,800
Mathematically the percentage gain will be;
% gain = (selling price- cost price)/selling price * 100%
% gain = (16,800-14,000)/14,000 * 100/1
% gain = 2800/14,000 * 100/1 = 1/5 * 100/1 = 20%
Answer: I attached a picture of the graph
4.2x - 1.4y = 2.1
-1.4y = -4.2x + 2.1
y = (-4.2/-1.4)x + 2.1/-1.4
y = 3x - 1.5 <==
