Bill has 50 dollars. his friend has 40 dollars. how many more does bill have?

10 More Dollars.

Step-by-step explanation:

Bill had 50 dollars and his friend had 40 so you subtract their money. You get the answer of 10 dollars. $10.

D.   ft²

Step-by-step explanation:

Scientific notation of a number is expressed in the following form,

Where,

a = decimal number (1 ≤ |a| < 10)

b = the power of 10 whereby the scientific notation is equivalent to the original number.

To express 4,356,000 square feet in scientific notation, do the following:

1. Move the decimal point to the left up to the last non-zero digit =  a = 4.356

2. Since we moved the decimal point by 6 decimal places, therefore, b = 6

3. Substitute the values of the variables into  

Thus:

4,356,000 = 3. Substitute the values of the variables into  

a * 10^b

Thus:

4,356,000 = 4.356 * 10^6