Pretty sure it’s 8 electrons
We bring ecuation to the same denominator
16y -18=7y
16y-7y=18
9y=18
y=18/9=2
X is the is the number four and y is 7+3 which is 10 so X is the number for and y is the number 10
x= 5
12 squared + b squared = 13 squared
144+ b squared = 169
b squared = 25
b squared= √25
b=5
Answer:
45 inches.
Step-by-step explanation:
As the perimeters are the same, you know that 5(0.5x-1) = 3(x-5).
This can be expanded as 2.5x - 5 = 3x - 15.
Now rearrange to find x: -5 = 0.5x -15
10 = 0.5x
20 = x
And substitute x back into one of the formulas: 3(20-5) = 60-15 = 45 inches.