Answer:
The value of k = 20 for equation 2(4x+10)=8x+k to have infinitely many solutions.
Explanation:
Given the expression
![2(4x+10)=8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/vmlgwadqs24h1a17c9lbmjmna4zk34ugie.png)
solving
![2(4x+10)=8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/vmlgwadqs24h1a17c9lbmjmna4zk34ugie.png)
![8x+20 = 8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/qpvbxdyj17msfzjtns3knwlg1i7gmwq5lu.png)
We know that the equations with infinitely many solutions have the same expressions on both sides
It means the value of k can be determined by further simplifying such as
![8x+20 = 8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/qpvbxdyj17msfzjtns3knwlg1i7gmwq5lu.png)
8x+20-8x = k
20 = k
Therefore, the value of k = 20 for equation 2(4x+10)=8x+k to have infinitely many solutions.
VERIFICATION:
Given
![2(4x+10)=8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/vmlgwadqs24h1a17c9lbmjmna4zk34ugie.png)
![8x+20 = 8x+k](https://img.qammunity.org/2022/formulas/mathematics/high-school/qpvbxdyj17msfzjtns3knwlg1i7gmwq5lu.png)
Put k = 20 in the equation
![8x+20 = 8x+20](https://img.qammunity.org/2022/formulas/mathematics/high-school/ga96j6973md60so9778r249bwo5qg3wowb.png)
![8x+20 - 8x+20 = 0](https://img.qammunity.org/2022/formulas/mathematics/high-school/32frl55fa2nlo6fsylf97jxkkaqzvripdp.png)
![0 = 0](https://img.qammunity.org/2022/formulas/mathematics/high-school/3t6cwj462ecwukpzqk8s37s1qf76xgq4yk.png)
equations with infinitely many solutions have the same expressions on both sides.
This means the statement is always true.