Answer:
Step-by-step explanation:
400^2 = 160,000
5 2/6 = 32/6 = 16/3
6 70/30 = 250/30 = 25/3
16/3 * 25/3 = 400/9
400/9 / 160,000 = 1/3600
Answer:
1- 42
2- 90
3- 45
Step-by-step explanation:
lxw=area
Answer:
49开
Step-by-step explanation:
Answer:
4a^2-6b^2+12
Step-by-step explanation:
(a^2 - 2b^2 + 3) - (4b^2 - 5) + (3a^2 + 4)
distribute the negative sign to each term in the 2nd expression
a^2-2b^2+3-4b^2+5+3a^2+4
combine like terms
4a^2-6b^2+12
Answer:
what does the picture say?
Step-by-step explanation: