Answer:
m<DCA = 40
Step-by-step explanation:
m<DAC = 90
m<CDA = 50
m<DCA = 180 - 90 - 50 = 40
Answer:
The second band
Step-by-step explanation:
50+20=70
20+25=45
Answer:
( 4, 5 ) -( 5, 6 ) =7,15
Step-by-step explanation:
Step-by-step explanation:
5 × 4.70=23.50
3× 6.80 = 20.40
23.50-20.40=3.10