Answer:


Step-by-step explanation:
----------- (1)
-----------(2)
Adding equation (1) and (2)


Substitute y=-4 in equation (1) or (2)


Area of a parallelogram = base x height
So, 10.5 x 7 = 73.5
The answer is x equals -3
Total distance travelled = (x.a + 2x -10) miles .
How to solve such time related questions?
The key concept for solving such questions is the relationship between speed, distance and time.
The relationship between them is Distance = Speed X Time
The whole trip can be divided into two parts
Part 1 :- Speed = x mph and time = a hours
∴ Distance = x .a miles
Part 2 :- Speed = x -5mph and time = 2 hours
∴ Distance =(x-5).2 = (2x -10)miles
Total distance = (x.a + 2x -10) miles
Learn more about Distances here :
brainly.com/question/6716662
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65 kg i think or 143 pounds