Answer:
638
Step-by-step explanation:
its 638, not 639 because its above 638.5
Answer:12%
Step-by-step explanation:
(333000-293040)×100/333000
27 and 36
12 is too short to be multiplied by 9, 21 can be multiplied by 3 but not 9 again, 3 can’t go into 45. Which leaves 27 and 36. 3 times 9 equals 27. 3 times 12 equals 36, 9 times 4 equals 36.
The triangle BCD is an acute triangle