Place a decimal point between the first two digits (4 and 8). Erase the commas and the 0s. So you'll have 4.86 left over after you've done that erasing.
Now ask yourself: "how many places to the right must I move the decimal to get 4.86 to turn back to 48,600,000?"
That would be 7 places to the right. That 7 is the exponent over the 10
<h3>Therefore, the answer is 4.86 * 10^7</h3>
This number is 48.6 million
Answer:
they work together, it will take 2.4 hours to build the wall.
Step-by-step explanation:
One bricklayer can build a wall in 6 hours.
One hour work = 
Another bricklayer can build the same wall in 4 hours.
One hour work = 
They can together, how long will take them to build the wall.
Let's take "t" the time taken to build the wall.
The sum of their work rate = 1 (To build the wall)

Now we have to solve this equation. Take LCD of 6 and 4.
The LCD (least common divisor) of 6 and 4 is 12.

5t = 12*1
5t = 12
Dividing both sides by 5, we get
t = 
t = 2.4 hours.
So, they work together, it will take 2.4 hours to build the wall.
Step-by-step explanation:
5y + 3 > -7y + 13
12y > 10
y > 10/12
y > 5/6