Answer:
x = 1, y = 4
Step-by-step explanation:
This is very simple
Since you have 2 equations with the same coefficient of x, just minus one equation from another:
x + 3y = 13
-
x + 2y = 9
1y = 4
Sub y = 4 into any of the 2 equation,
x + 3(4) = 13
x + 12 = 13
x = 13 - 12
= 1
A trapezium has a pair of parallel sides.
Answer:
280.8997
Step-by-step explanation:
cross section = 2*15*5+2*(25/360)*15*15*pi+5*(25/360)*2*pi*15
= 280.8997
The time changes depending on how fast the truck is going-so it's dependent
50 miles and the truck do not change no matter what-so they are constant
The speed of the truck changes the time-so the speed is the independent
Answer:
£1.22
Step-by-step explanation:
Total cost: 5.95+1.62+0.25+2(0.48)=8.78
Change: 10-8.78=1.22