Answer:
AB = 60 cm
Step-by-step explanation:
AB + BC = AC
let the length of BC = x then AB = 4x, hence
4x + x = 75
5x = 75 ( divide both sides by 5 )
x = 15
AB = 4x = 4 × 15 = 60 cm
Answer:
4
Step-by-step explanation:
Step-by-step explanation:
1=-5(-2)+2
1-2=10
-1=10
10+1
11
Answer:
70 mm
Step-by-step explanation:
Use PYTHAGOREAN THEOREM: a^2+b^2=c^2
42^2 + 56^2 = c^2
1764 + 3136 = c^2
4900=c^2
square root of 4900 is 70
so, the final answer is 70 mm