The sum of the left side of these two equations is equal to the same of the right side is these two equations
4x+8y + (-4x+2y) = 20 + 30
10y =50 ( x is eliminated)
y=5
Take this into the second equation
-4x +2y = 30
-4x + 2*5 = 30
x=-5
So x=-5
y=5
Answer:
after the ballon fight it would be 12:45 pm
after they sprayed themselves with water it would be 1 :40 pm
1 : 40 pm is when alana's dad showed up
Step-by-step explanation:
you can open the file I gave you now. the answer is there
Find the area of the base of the pyramid, then find the area of each side then add the areas. hope this help :)
