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olya-2409 [2.1K]
3 years ago
12

What is the sum of 7 2/6 + 2 1/4

Mathematics
2 answers:
polet [3.4K]3 years ago
8 0

Answer:

9  7/12

Step-by-step explanation:

You have to find the common denominator, in this case it would be 12. Then you multiply the denominator to get 12... then whatever you do to the top you must do to the bottom. Then, you add 7+2 and the fractions. This mixed number cannot be simplified.

vovikov84 [41]3 years ago
4 0

Answer:

115/12

Step-by-step explanation:

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kenny6666 [7]

Answer:

16%

Step-by-step explanation:

because 50 is 16% of 800

hope that helps and is correct

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3 years ago
Find the difference. <br> - 4 1/9 - 7 2/3<br> **Answer should be a fraction**
olganol [36]

Answer:

your answer is

- 11 \frac{7}{9}

4 0
3 years ago
Write a compound interest function to model the following situation. Then, find the balance after the given number of years.
Valentin [98]

Answer:

  $23,330.66

Step-by-step explanation:

The compound interest function is ...

  FV = P(1 +r/n)^(nt)

where P is the principal amount ($19,600), n is the number of compoundings per year (4), r is the interest rate (.035), and t is the number of years (5).

Putting these numbers into the formula and doing the arithmetic, we get ...

  FV = $19,600(1 +.035/4)^(4·5) = $23,330.66

6 0
3 years ago
$3000 is invested in an account at interest rate r, compounded continuously. Find the time required for the amount to triple. (A
arsen [322]

Answer:

36.62\ years  

Step-by-step explanation:

<u><em>The value of r is the question is</em></u>

r=0.03

we know that

The formula to calculate continuously compounded interest is equal to

A=P(e)^{rt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest in decimal  

t is Number of Time Periods  

e is the mathematical constant number

we have  

t=?\ years\\ P=\$3,000\\A=\$9,000\\r=0.03  

substitute in the formula above

9,000=3,000(e)^{0.03t}  

solve for t

3=(e)^{0.03t}  

Apply ln both sides

ln(3)=ln[(e)^{0.03t}]  

Apply property of logarithms

ln(3)=(0.03t)ln[(e)]  

Remember that

ln(e)=1

ln(3)=(0.03t)  

t=ln(3)/(0.03)=36.62\ years  

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3 years ago
There are 15 books on a shelf. 9 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio
salantis [7]
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3 years ago
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