38 yard piece for each student and there are 16 students:
38*16=608
608 yards needed for your class
Answer:
-3
Step-by-step explanation:
2x - 4y = 12
4y = 2x - 12
y = ½x - 3
Y intercept is -3
X intercept is 6
Answer:
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Step-by-step explanation:
![4t-16t^2=0\qquad\text{divide both sides by 4}\\\\\dfrac{4t}{4}-\dfrac{16t^2}{4}=\dfrac{0}{4}\\\\t-4t^2=0\\\\t(1-4t)=0\iff t=0\ \vee\ 1-4t=0\\\\1-4t=0\qquad\text{subtract 1 from both sides}\\\\-4t=-1\qquad\text{divide both sides by (-4)}\\\\t=\dfrac{1}{4}](https://tex.z-dn.net/?f=4t-16t%5E2%3D0%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%204%7D%5C%5C%5C%5C%5Cdfrac%7B4t%7D%7B4%7D-%5Cdfrac%7B16t%5E2%7D%7B4%7D%3D%5Cdfrac%7B0%7D%7B4%7D%5C%5C%5C%5Ct-4t%5E2%3D0%5C%5C%5C%5Ct%281-4t%29%3D0%5Ciff%20t%3D0%5C%20%5Cvee%5C%201-4t%3D0%5C%5C%5C%5C1-4t%3D0%5Cqquad%5Ctext%7Bsubtract%201%20from%20both%20sides%7D%5C%5C%5C%5C-4t%3D-1%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%20%28-4%29%7D%5C%5C%5C%5Ct%3D%5Cdfrac%7B1%7D%7B4%7D)
Answer:
x = 3 , y = 1
Step-by-step explanation:
2x + y = 7
3x + y = 8
solution
2x + y = 7-----------(1)
3x - y = 8------------(2)
from equation 1
2x + y = 7
y = 7 - 2x-------------(3)
substitute equation 3 into equation 2
3x - y = 8
3x - (7 - 2x) = 8
3x - 7 + 2x = 8
3x + 2x = 8 + 7
5x = 15
divide through by the coefficient of x
5x/5 = 15/5
x = 3
to find y
substitute x into equation 1
2x + y = 7
2(3) + y = 7
6 + y = 7
y = 7 - 6
y = 1