Rob has $1.65 in nickels and dimes. He has 25 coins in all. How many of each kind of coin are there? Please explain how you got your answer and show your work.
Answers
Answer:
The number of nickels is 17 and number of dimes is 8.
Step-by-step explanation:
Let the number of nickels be x and number of dimes be y.
Total number of coins is 25.
.... (1)
.... (2)
On solving (1) and (2), we get
Put this value in equation 1.
Therefore the number of nickels is 17 and number of dimes is 8.
Final answer:
Rob has 15 nickels and 10 dimes. This conclusion is reached via a system of equations, considering both the number of coins and the total worth in cents.
Explanation:
This problem can be solved using a system of equations. Let's denote the number of nickels as n and the number of dimes as d. We have two equations here:
- The total number of coins is 25. So, n + d = 25.
- A nickel is worth 5 cents and a dime is worth 10 cents. So, the total amount in cents is 165. So, the equation considering the worth of each coin is 5n + 10d = 165.
From equation [1], we can express d in terms of n (d = 25 - n) and substitute it into equation [2] to find the value of n.
Doing this, we find that n = 15, which means d = 10. So, Rob has 15 nickels and 10 dimes.
Learn more about System of Equations here:
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Answers
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Answers
Answer:
Step-by-step explanation:
Since the radius of a circle is half of the diameter, the radius of this one is 12/2=6 feet. The formula for the area of a circle is , which in this case is
. Hope this helps!
Answer:
36π
Step-by-step explanation:
A = π
= π
= π x 36
= 36π
Please mark as Brainliest
Answers
If both values are divided by 36:
2/1, or 2 cookies per (one) minute.
Brainiest would be nice.
Which is.......2
So, 2 cookies per minute
Answers
Answer:
$108.4
Step-by-step explanation:
Divide $216.8 by 4 to find the amount of money Tom makes in 1 day:
== $54.2 per day
We are looking for money Tom makes in TWO days, so multiply the value we just found by 2:
$54.2*2
==$108.4
Hey!
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Steps To Solve:
~Divide
216.80 / 4 = $54.2 (in 1 day)
~Multiply
54.2 x 2 = 108.4 (in 2 days)
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Answer:
Tom makes $108.4 in 2 days.
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Hope This Helped! Good Luck!
Answers
A+B=180º
In this case:
A=44º
44º+B=180º
B=180º-44º=136º
Anser: the measure of the other angle is 136º