Answer:
d = 2.75 or 11/4
Step-by-step explanation:
15 = 5 + 4(2d - 3)
15 = 5 + 8d - 12
15 = 8d - 7
<u>+7 + 7</u>
22 = 8d
22/8 = d
2.75 = d
Check:
15 = 5 + 4(2(2.75) - 3)
The Answer is:
5/18
Step-by-step explanation:
5/6 ÷ 3 = 5/18
This is the process of completing the square.
Keep this equation in mind:

Basically, to make this a perfect square trinomial, you take half of b and square that value. This will make it so you can compress the left side of the equation into

depending on the sign in the middle of the original equation.
Answer: The value of x is 7
Step-by-step explanation: