Step-by-step explanation:
Simplify fractions on fractions

Multiply by the inverse of denominator

Simplify fractions on fractions

Multiply by the inverse of denominator

Add both sides

Answer:
81m²
Step-by-step explanation:
I took the quiz :)
All the sides are 20 cm resulting in the perimeter being 80
Step-by-step explanation:
B because the straight angle must be 180°
Answer:
(-4, -2)
Step-by-step explanation:
The x-coordinate would stay the same, but the y-coordinate would be halved. Thus, the corresponding point would be (-4, -2).