Answer:


Step-by-step explanation:
<u>Given the system of equations</u>


<u>Divide 3 on both sides of the 2) equation</u>



<u>Current system</u>


<u>Substitute 1) equation into the 2) equation</u>

<u>Combine like terms</u>


<u>Subtract 15 on both sides</u>


<u>Divide 4 on both sides</u>


<u>Substitute the x value into one of the equations to find the y value</u>




Hope this helps!! :)
Please let me know if you have any questions
Answer:
0.9
Step-by-step explanation:
Answer:
? = 10
Step-by-step explanation:
Let " ? " be x.
5 / x = x / 20
x * x = 5 * 20
x² = 100
[ 100 = 10 x 10 = 10² ]
x² = 10²
x = 10