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Answer: Choice A</h3>
0.10d + 0.05n = 2.25
d = 2n
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Explanation:
n = number of nickels
d = number of dimes
we have twice as many dimes as nickels, so we could have something like 18 dimes and 9 nickels. Algebraically we would write d = 18 and n = 9. The equation that fits this is d = 2n. The answer is between A and B at this point.
We rule out choice B since the 0.05d is incorrect. It should be 0.10d to represent the total value of all the dimes.
Choice A is correct
d = number of dimes
0.10d = value of all the dimes in dollars
n = number of nickels
0.05n = value of all the nickels in dollars
0.10d + 0.05n = total value from both coins combined
2.25 = total value from both coins combined
0.10d + 0.05n = 2.25
Answer:
(-1,1).
Step-by-step explanation:
We need to calculate 
where R is the radius of convergence.
Applying LHopital rule we obtaing that the limit is 1. So 
then R = 1.
As the serie is the form 
we center the interval in 0. So the interval is (0-1,0+1) = (-1,1). We don't include the extrem values -1 and 1 because in those values the serie diverges.
Answer:
isolate variable by adding or subtracting it on both sides.
Step-by-step explanation:
Hello!
I'll start w/ 18.74 to round. To round 18.74, the 4 wouldn't have any effect raising the 7's value, since anything 4 and below won't increase the number's value. Now you just have 18.7. The 7 will increase the 8's value to a 9, since anything 5 and up will increase the rounded number's value. So 18.74 is now rounded up to 19.
For 41.49, you'll round the 4 to a 5, since 9 will increase the value of the 4. Now you have 41.5. The newly rounded 5 will then increase the 1's value, making it a 2. So now 41.49 is now rounded up to 42.
You can now estimate the sum by adding 19 w/ 42 to get an estimate of 61!
I hope this helps!!!
Y=1.09(x-1)+1.49 where y is cost and x is in pounds we could further operate:
y=1.09x-1.09+1.49
y=1.09x+0.4 (note that the domain is x≥1)
