In the first line is -1and +7
Second line +1 and -7
Third line -1 and - 11...
Fourth line +7 and + 12...
Multiply them together. remember units.
Answer:
20 cm
Step-by-step explanation:
5x + 32 + 6x + 4 = 80
11x + 36 = 80
11x = 44
x = 4
sides of triangle:
5(4) = 20 cm
32 cm
6(4) + 2 = 26 cm