Answer:
Number of dimes = 34
Number of nickels = 13
Step-by-step explanation:
Total number of coins = 47
Coins are in the form of nickels and dimes.
Value of a nickel = 5 cents
Value of a dime = 10 cents
Total value of coins = $4.05 or 405 cents
To find:
Number of nickels and dimes?
Solution:
Let number of nickels = ![x](https://tex.z-dn.net/?f=x)
Money value of nickels = 5![x](https://tex.z-dn.net/?f=x)
Let number of dimes = ![y](https://tex.z-dn.net/?f=y)
Money value of dimes = 10![y](https://tex.z-dn.net/?f=y)
Total value of coins = ![5x+10y](https://tex.z-dn.net/?f=5x%2B10y)
This value is given as equal as 405.
As per question statement, the equations can be written as:
![5x+10y = 405 ..... (1)\\x+ y = 47 ...... (2)](https://tex.z-dn.net/?f=5x%2B10y%20%3D%20405%20.....%20%281%29%5C%5Cx%2B%20y%20%3D%2047%20......%20%282%29)
Multiplying equation (2) with 5 and subtracting from equation (1):
![10y - 5y = 405 - 235 \\\Rightarrow 5y = 170\\\Rightarrow y = 34](https://tex.z-dn.net/?f=10y%20-%205y%20%3D%20405%20-%20235%20%20%5C%5C%5CRightarrow%205y%20%3D%20170%5C%5C%5CRightarrow%20y%20%3D%2034)
Number of dimes = 34
Number of nickels = 47 - 34 = 13
Answer:
28
Step-by-step explanation:
Neat Question.
Thanks for posting.
The straign line (horizontal) makes an isosceles triangle inside the circle. So the bottom angle of the triangle is also 59 degrees. The central angle of the interior triangle is
180 - 59 - 59 = 62.
x and the 62 degree angle are complementary -- both are in the 90 degree angle triangle made by the tangent. x + 62 = 90
x = 90 - 62 = 28
Answer:
A
Step-by-step explanation:
Formula for circumference is 2πr=C
80/2 gives you the radius which is 40.
40×2=80
pi=3.14
80×3.14=251.2 which is 251 or A
Answer:
if your asking about how much he has left it's 20
Can't graph on here. So graph this:
C = 225s + 5625