Answer:
y=4x-7
Step-by-step explanation:
8x-2y=-14
-8x = -8x
-2x=-8x-14
-2= -2 -2
y=
y=4x-7
Answer: 5:15:23 pm
Step-by-step explanation:
There are different time zones in the world due to the Earth's rotation as this results in different parts of the Earth receiving sunlight at different times.
GMT is used as a basis to find the times of other zones.
In this instance, EDT time is -4 that of GMT.
This means that EDT is 4 hours behind GMT.
Time in GMT is therefore:
= 1:15:23 + 4 hours
= 5:15:23 pm
Assuming you mean y=10x+150 and y=20x+115, you need to use a simultaneous equation, because you have two equations with two unknowns (x and y)
rearrange so
10x-y=-150
20x-y=-115
multiply the top by -1, so that if we add the two lines together, the y will cancel out
-10x+y=150
20x-y=-115
add the two lines together
10x=35
x=3.5
so the time is 3 and a half weeks
then we can sub in x to find y
20x-y=-115
20(3.5)-y=-115
70-y=-115
-y=-185
y=185
so 185 tickets were sold !
you can sub these values into your original equations to check your answer :)