Answer:
Jemima is wrong because perimeter is sum of all sides and the perimeter of this figure would be the outer sides of it and not the inner sides.
Answer:
option C
Step-by-step explanation:
given,
A and B are arbitrary 2×2 matrices
we need to find
(A+B)²
(A+B)² = (A+B)(A+B)
(A+B)² = A.A + A.B + B.A + B.B
(A+B)² = A² + A.B + B.A + B²
Matrix multiplication does not follow multiplicative law
AB ≠ BA
(A+B)² = A² + A.B + B.A + B²
now,
(A+B)² = A(A+B)+ B(A+B)
the correct answer is option C
5=−(−z+3)
Simplify:
5=−(−z+3)
5=z+−3(Distribute)
5=z−3
Flip the equation.
z−3=5
Add 3 to both sides.
z−3+3=5+3
z=8
