The numbers given in the problem are written in Scientific Notation. By definitios, this is a product of two factors: the first one is a number between 1 and 10, and the second number is 10. This method is used when you have to write numbers that are too large or too small. So, let's write them in their decimal form to understand it better:
5x10^4=50000
7x10^-5=0.00007
3x10^-9=0.000000003
8x10^4=80000
Therefore, the order of <span>5x10^4, 7x10^-5, 3x10^-9, 8x10^4 from least to greatest is:
3</span>x10^-9, 7x10^-5, 5x10^4, 8x10^4<span> </span>
Answer:
170000
Step-by-step explanation:
17000
Let x= the time each one paints at the same time. Painting one whole room means that the output of our equation equals....1.
x/5 = the fraction of the room Matt can paint in x hours.
x/3 = the fraction of the room Elliot can paint in x hours.
Our working equation will be: x/5+x/3 = 1
[solve for x]
[start by finding common denominator] 3x/15 + 5x/15=1
[add together] 8x/15 = 1
[isolate the variable] 8x=15
x=15/8, or 1 7/8 hours. Together, they can paint a room together in 1 7/8 hours. (An hour, 52 minutes, 30 seconds if you divide it all the way out!)
8 / 24 = 0.3
1 muffin = 0.3 cups of flour
30 muffins * 0.3 cups of flour= 10 cups of flour.
10 cups of flour are needed to make 30 muffins.