I believe it is 5 but i may need someone to double check <span />
Answer:
4
Step-by-step explanation:
15x+20 = 40 +10x
x = 4
It's D. Slopes are the same, because if you divide opposite and adjacent side of both triangles, you get the same result. Count the squares, for the smaller triangle it's 2/2=1 and for the bigger one it's 4/4=1.
I think it’s C
Explanation: the blue yarn is 7 and the red yarn is 10 if you combine both as 7 + 10= 17