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irga5000 [103]
3 years ago
14

Damon has five dimes and some nickels in his pocket, worth of a total of $1.20. To find the number of nickels Damon has a, stude

nt wrote the equation 5n + 50 = 1.29. Find the error in the students equation
Mathematics
1 answer:
Agata [3.3K]3 years ago
6 0
The answer to the equation should be in cents whereas it is in dollars which would be incorrect 
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25 is what percent of 20?
denis-greek [22]

Answer:

20 is 80% of 25

Step-by-step explanation:

We assume, that the number 25 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 25, so we can write it down as 100%=25.

4. We know, that x% equals 20 of the output value, so we can write it down as x%=20.

5. Now we have two simple equations:

1) 100%=25

2) x%=20

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=25/20

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20 is what percent of 25

100%/x%=25/20

(100/x)*x=(25/20)*x       - we multiply both sides of the equation by x

100=1.25*x       - we divide both sides of the equation by (1.25) to get x

100/1.25=x

80=x

x=80

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3 years ago
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6.5÷1345? please make the answer as short as posible.
solong [7]
6.5 ÷ 1345 = 0.0048 or 13/2690
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What is 1/5 of 11????????????
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Multiply 1/5 by 11 to get 2.2, to check, multiply 2.2 by 5. The answer though, is 2.2.
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Which of the decimal value given below is the largest?<br><br> 0.52<br> 0.052<br> 0.0052
professor190 [17]
0.52 because 52/100 is better than 52/1000 and 52/10000
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