C, 62
Line segment SQ=180, because it is a straight line
90+28=118
180-118=62
hope this helps:)
Bob bought 4 shirts that are 7$ off each.
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
2 wide walls (15x6)x2=180 square feet
2 long walls (25x6)x2=300 square feet
ground 25x15=375 square feet
sum them all up and you get
375+300+180=855
you need paint for 855 square feet
OK my friend if you times 15 by each of the amount of hours you will find out which one it is but in this case it will be 15 times 6 hours will equal out to be $90