Answer: 7.64 x 10^6
Change the number to be a number between 1 and 10 multiplied by a power of 10. In this case, the decimal point is moved 6 places to the right when changing it to scientific notation, which is where you get 10^6.
Let’s say the block is a and the neighbourhood is b
2a+b= 10 (equation x)
2a+4b=31
3b=21 mins so b=7 mins
so then take x and put in 7 so
2a + 7=10
2a = 10 - 7 = 3
a = 1.5
That’s how I would do it not sure if it is right but hope it helps
Answer:
Donno dont care answer is 5
Step-by-step explanation: