The amounts of household waste generated in a region during two years were 23,400,000 tons and 48,100,000 tons. What was the total household waste generated over these two years in the region, expressed in scientific notation?

7.15 ⋅ 107 tons
7.15 ⋅ 1014 tons
71.5 ⋅ 107 tons
71.5 ⋅ 1014 tons

Question

The amounts of household waste generated in a region during two years were 23,400,000 tons and 48,100,000 tons. What was the total household waste generated over these two years in the region, expressed in scientific notation?

 7.15 ⋅ 107 tons
 7.15 ⋅ 1014 tons
 71.5 ⋅ 107 tons
 71.5 ⋅ 1014 tons

nuccioreggie · Answer

@mathmath333

nuccioreggie · Answer

@Nnesha

nuccioreggie · Answer

@satellite73

nuccioreggie · Answer

Please help dont leave

nuccioreggie · Answer

@pooja195

nuccioreggie · Answer

@whpalmer4

whpalmer4 · Answer

Add the two numbers together, what do you get?

nuccioreggie · Answer

I got 71,500,000

whpalmer4 · Answer

Good.  How do you write that in scientific notation?

nuccioreggie · Answer

I got B

whpalmer4 · Answer

$$7.15*10^{14}$$?

You sure about that?

$$10^{14} = 100,000,000,000,000$$

nuccioreggie · Answer

Wait no D i jus got them mixed up its D

whpalmer4 · Answer

Scientific notation has two parts, mantissa and exponent.  The mantissa is that number out from, and it is always between 1 and 10 (or -1 and -10). 

Come on, stop guessing.  D is$$71.5*10^{14} = 71.5*100,000,000,000,000$$

whpalmer4 · Answer

$$10^0=1$$$$10^1=10$$$$10^2=100$$$$10^3=1,000$$$$10^4=10,000$$$$10^5=100,000$$$$10^6=1,000,000$$$$10^7=10,000,000$$etc.

nuccioreggie · Answer

Ok sorry i just did math on paper and got A

whpalmer4 · Answer

that's more like it!

nuccioreggie · Answer

Thanks can u help me with a few more

whpalmer4 · Answer

sure, fire away, got a couple minutes