Answer:
x=3 and y=4
Step-by-step explanation:
solve x-y=-1 to get x:
x−y=−1
x−y+y=−1+y(Add y to both sides)
x=y−1
Substitute y−1 for the x value in x+2y=11:
3y/3=12/3
y=4
Substitute 4 for the y value in x=y−1:
x=y−1
x=4−1
x=3
so y=4, and x=3
The graph of the journey is shown in the speed-time graph below
At the time = 3 minutes, Peter would have achieved the speed V.
The distance he travelled is the area under the line as shown in the graph
We first need to find the V by using the area of a rectangle formula
so V=220
the gradient the f slope then given as
Answer:
Step-by-step explanation:
i dont know man sorry
To find the unit price we need to all price divide by number of gallons, so
Answer: The unit price is $3.54
Answer:
l = p - 2w / 2
Step-by-step explanation:
You can make your own problem and plug it in. I substituted 5 for w and 6 for l. That means the perimeter would be 22. Now plug those numbers into all the problems. The one that gives you the correct answer is the top right answer.
6 = 22 - 5 / 2