Biểu diễn 1 ràng buộc trên mặt phẳng tọa độ Oxy là
1 answer:
You might be interested in
Step-by-step explanation:
In the picture, That's a correct answer.
You only flip the inequality sign when you multiply or divide both sides by a negative number.
================================================
Problem 1
The inequality sign flip happens because we divided both sides by -8.
The graph will have a closed circle at 4 with shading to the left.
Three solutions are x = 0, x = 1, x = 2. You can pick any three numbers you want as long as they are 4 or smaller.
================================================
Problem 2
The graph will have an open circle at 13/3 = 4&1/3 = 4.333 approx. The shading is to the left. No inequality sign flip happens because we divided both sides by a positive number.
Your choice of three solutions is correct. You can pick anything smaller than 4.3333
================================================
Problem 3
The solution set is any value 3 or larger. Three solutions are x = 5, x = 6 and x = 7.
The graph has a closed circle at 3 on the number line. The shading is to the right.
Answer:
a) $2.44 per cupcake
b) $2.33 per cupcake
c) $2.58 per cupcake
Step-by-step explanation:
We are given the following in the question:
We have to calculate the unit price of the cupcakes.
Unit price =
12 cupcakes for $29
Unit price =
24 cupcakes for $56
Unit price =
50 cupcakes for $129
Unit price =