Answer:C
Step-by-step explanation:
81^½÷3^-1=√81÷(1/3)
=9÷3=3
Answer:
$16 for lunch
$4 for coffee
$12 left
Step-by-step explanation:
32/2 = 16
16 * 1/4 = 4
32 - (16 +4) = 12
Answer:
b) -6x - 3
Step-by-step explanation:
3(-2x-1)=3*(-2x)+3*(-1)= -6x - 3
Answer:
∠DEA=∠BAC
Step-by-step explanation:
∠DAE=∠BCA (corresponding angles)
Angles in a triangle add up to 180:
Angles in ΔDAE=Angles in ΔABC
∠DAE+∠EDA+∠DEA=∠BCA+∠ABC+∠BAC
∠EDA+∠DEA=∠ABC+∠BAC (since ∠DAE=∠BCA, we can cancel them out)
∠DEA=∠BAC (∠EDA=∠ABC=90)
