Answer:
no because r is a varible that dont have number
Answer:
A
Step-by-step explanation:
Answer:
x = 6
Step-by-step explanation:
use distributive property to multiply the -3 with the numbers inside the parentheses
-6x + 3 + 8x = 15
combine like terms
2x + 3 = 15
subtract 3 from both sides
2x = 12
x = 6
Answer: The answer is (D). Zhao Xue doesn’t have enough money left to buy any yofurt
Step-by-step explanation: Given that Zhao Xue is buying buy milk and yogurt, a total of at least 6.5 gallons of dairy products and she has a budget of $20. The given graph represents the constraints on the number of gallons of milk 'M' and yogurt 'Y' Zhao Xue buys. Zhao Xue buys 4 gallons of milk. We need to calculate the number of gallons of yogurt she can buy to meet both her constraints.
From the graph, we can write
Condition A :
![M+Y\geq 6.5.](https://tex.z-dn.net/?f=M%2BY%5Cgeq%206.5.)
Condition B :
![8M+5Y\leq40.](https://tex.z-dn.net/?f=8M%2B5Y%5Cleq40.)
Now, if she buys 4 gallons of milk, the the conditions become
![4+Y\geq 6.5~~\Rightarrow Y\geq 2.5,\\\\8\times 4+5Y\leq 40~~\Rightarrow Y\leq 1.6.](https://tex.z-dn.net/?f=4%2BY%5Cgeq%206.5~~%5CRightarrow%20Y%5Cgeq%202.5%2C%5C%5C%5C%5C8%5Ctimes%204%2B5Y%5Cleq%2040~~%5CRightarrow%20Y%5Cleq%201.6.)
Here, there will be no solution to these constraints.
Therefore, she does not have enough money left to buy any yogurt.
Thus, the correct option is (D).