1/3 of an hour= 60mins/3
= 20 mins
1/2an hour= 60mins/2
= 30 mins
30+20 = 50 minutes total
Answer: The answer is 90.
Step-by-step explanation:
90+90= 180+90= 270
Factor out the common factor, which is x.
x(7x-3)
Answer:
x=8.72389
Step-by-step explanation:
first you make every number 10 times larger
25*10, 48*10, etc etc
you find that you have 12x
the difference between the two surfaces is
120000 (250*480)- 28600= 91400
12x²+20=91400
12x²=91400-20
12x²= 91380
x²=91380/ 12
x²= 7615
x= √7615
x= 87.2389
and since we had made everything 10 times bigger
x=8.72389
i hope you understand i am not good with the words but i think you can understand what i did.
