Answer:
the answer is 17miles .....
A dozen of doughnuts cost $5 and a dozen of croissants cost $6.
Step-by-step explanation:
Let,
Cost of 1 dozen doughnuts = x
Cost of 1 dozen croissants = y
According to given statement;
7x+3y = 53 Eqn 1
x+5y = 35 Eqn 2
Multiplying Eqn 2 by 7
![77(x+5y = 35)\\x+35y=245\ \ \ Eqn\ 3](https://tex.z-dn.net/?f=77%28x%2B5y%20%3D%2035%29%5C%5Cx%2B35y%3D245%5C%20%5C%20%5C%20Eqn%5C%203)
Subtracting Eqn 1 from Eqn 3
![(7x+35y)-(7x+3y)=245-53\\7x+35y-7x-3y=192\\32y=192](https://tex.z-dn.net/?f=%287x%2B35y%29-%287x%2B3y%29%3D245-53%5C%5C7x%2B35y-7x-3y%3D192%5C%5C32y%3D192)
Dividing both sides by 32
![\frac{32y}{32}=\frac{192}{32}\\y=6\\](https://tex.z-dn.net/?f=%5Cfrac%7B32y%7D%7B32%7D%3D%5Cfrac%7B192%7D%7B32%7D%5C%5Cy%3D6%5C%5C)
Putting y=6 in Eqn 2
![x+5(6)=35\\x+30=35\\x=35-30\\x=5](https://tex.z-dn.net/?f=x%2B5%286%29%3D35%5C%5Cx%2B30%3D35%5C%5Cx%3D35-30%5C%5Cx%3D5)
A dozen of doughnuts cost $5 and a dozen of croissants cost $6.
Keywords: linear equation, elimination method
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Answer:
18 because 6 times 2 is twelve and 9 times 2 is 18... only if its direcrly proportional which it is
Step-by-step explanation:
pls mark brainliest it would really help me out
-15
-15/5 = -3
That is the answer, 15.