okay so
117° + angle a = 180° (supplementary angle)
angle a = 180 - 117
= 63°
then angle a + angle b + 81° = 180° ( angle sum property)
so... 63° + angle b + 81° = 180
144 + angle b = 180°
angle b = 180 - 144
= 36°
hope this helps.
Answer:
9
Step-by-step explanation:
first add 3 and 5 =8
then add 1/2 and 1/2 =1
8+1 =9
Answer:
22/3
Step-by-step explanation:
Make the whole number turn into a fraction, (21/3) and add the numerator (1/3), which the answer would be 22/3
Answer:
c
Step-by-step explanation:
because are of trapizium =( a+b/2) × h
