3x+y=19
y=19-3x and y=x+3, at a solution both x and y are equal so we can say y=y:
19-3x=x+3
19-4x=3
-4x=-16
x=4, and since y=x+3
y=7 so the solution is the point:
(4,7)
Answer:
full page = 8
half page = 5
Step-by-step explanation:
two equations can be derived from the question
40x + 75y = 800 equation 1
x + y = 13 equation 2
x = number of half page advertisement
y = number of full page advertisement
multiply equation 2 by 40
40x + 40y = 520 equation 3
subtract equation 3 from 2
280 = 35y
y = 8
substitute for y in equation 2
x + 8 = 13
x = 13 - 8
x = 5
So it would be x^7•y^6
If you need the explanation or you need me to show you the steps then message me.
Hope it helps :)
Answer:
Square roots and cube roots can be used to find missing dimensions of cylinders, cones, and spheres.
Step-by-step explanation:
3 x - 4 y = 65
Refine :
3 x - 4 * 4 = 65
3 x - 16 = 65
Add 16 to both sides :
3 x - 16 + 16 = 65 + 16
3 x = 81
Divide both sides by 3 :
3 x / 3 = 81 / 3
x = 81 / 3
x = 27
hope this helps!
