You have the ratio set up correctly:
2x+2/12 = x+3/21
Now cross multiply:
2x+2 * 12 = x+3 * 21
Simplify:
24x + 24 = 21x + 63
Subtract 24 from each side:
24x = 21x + 39
Subtract 21x from each side:
3x = 39
Divide both sides by 3:
x = 39/3
x = 13
Answer:
2
Step-by-step explanation:
Since ABC and A'B'C are similar triangles, the scale factor between their matching sides are equal to the overall scale factor. Thus, you would need to multiply AC by 2 to get the length of A'C'. 8/4 = 2.
Answer:
2x+8>12
Step-by-step explanation: