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frozen [14]
3 years ago
5

Add using scientific notation. (5.2 x 10') + (3.01 x 10^)

Mathematics
1 answer:
satela [25.4K]3 years ago
7 0

Answer: What's the exponents?

Step-by-step explanation:

5.2+3.01=8.21

but then there's no exponents that you stated. So it would be 8.21x10^?

If the tens do have exponents above them, add them together.

I hope this answer helps you!

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A sum of money is invested at 12% compounded quarterly. About how long will it take for the amount of money to double?
kompoz [17]

Answer:

  5.9 years

Step-by-step explanation:

We believe a better representation of the compound interest formula is ...

  V(t)=P(1+\dfrac{r}{n})^{nt}

We want to find the value of t for P=1 and V(t)=2. We are told n=4, so the formula becomes ...

  2=(1+\dfrac{.12}{4})^{4t}\\\\\log{(2)}=4t\log{(1.03)}\quad\text{take logs}\\\\t=\dfrac{\log{2}}{4\log{1.03}}\approx\boxed{5.9\quad\text{years}}

8 0
3 years ago
7.) Nate has $267 in bills. None of the bills is greater than $10. He has eleven $10 bills. He has seven fewer $5 bills than $1
slavikrds [6]
Just set up 2 equations. 

267 = 10(11) + 5(x) + 1(y) 
x = y - 7 

you can plug the second into the first and get 

267 = 110 + 5(y - 7) + y 
157 = 5y - 35 + y 
6y = 192 
y = 32 
x = 32 - 7 = 25 

thus, 32 $1's and 25 $5's
3 0
3 years ago
1/5x + 1/4 = 1/2(x+5) Answer Plz I Need It!
pav-90 [236]

Answer:

x=-15/2

Step-by-step explanation:

5 0
3 years ago
Solve for x. X/5-7=4​
hjlf

Answer:

x = 55

Step-by-step explanation:

\frac{x}{5}  - 7 = 4 \\  =  > \frac{x}{5}  = 4 + 7 \\  =  >  \frac{x}{5}  = 11 \\  =  >  x = 11 \times 5 \\  =  > x = 55

Hope it helps.

Don't forget to click the Brainliest button if you like my answer.

7 0
2 years ago
`9` is `50\%` of what number?
sweet [91]

Answer:

18

Step-by-step explanation:

4 0
3 years ago
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