Answer:
see explanation
Step-by-step explanation:
To determine if (3, 1 ) is a solution to the system
Substitute x = 3 into both equations and evaluate. If the result is y = 1 for both then the point is a solution.
y = 
× 3 - 3 = 4 - 3 = 1
y = - 2(3) + 7 = - 6 + 7 = 1
Since both equations equal 1 then
(3, 1 ) is a solution to the system
Distribute on the left
3x-15=7x
Subtract 3x from both sides
-15= 4x
Divide both sides by 4
-15/4= x
Final answer: x=-15/4 or -3.75
Express in the form 1:n.
Give n as a decimal.10:12
Answer:
≈ Rs. 16.57
Step-by-step explanation:
<u>Given:</u>
- Number of eggs bought = 100
- Cost price = Rs. 1280
- Profit required = 10%
- Selling price = ?
<h3>Solution</h3>
<u>Money should be made to get 10% profit:</u>
- 1280+10% = 1280*1.1= Rs. 1408
<u>Eggs left for sale:</u>
<u>Selling price:</u>
- 1408/85 ≈ Rs. 16.57 per egg
