Answer:
x = 23
Step-by-step explanation:
Hello There!
We are given that AC and BD are diagonals of a rectangle
If you didn't know diagonals are congruent
So given that BC = 56 and AC = 2x + 10 we can use this equation to solve for x
56 = 2x + 10
now we solve for x
step 1 subtract 10 from each side
56 - 10 = 46
10 - 10 cancels out
now we have 46 = 2x
step 2 divide each side by 2
46/2=23
2x/2=x
we're left with x = 23
