Answer:
triangle ABC is "not" a right-angled triangle
Step-by-step explanation:
AB=8cm
BC=5cm
perimeter = 22cm
CA = 22 - 8 - 5 = 9
8² + 5² = 89
9² = 81
AB² + BC² ≠ CA²
Answer:
Step-by-step explanation:
the second one , why? because 7a-12a=-5a
4 - 8 = -4
Answer:
1/3
Use the slope formula and simply the fraction.
