exam Maths Puzzle Numerical Ability

Please solve:
A trapezoid is formed by lines with the following equations:
2x+4y=16, x=4, x=0, y=0
Find the area of the trapezoid. Show all work and explain.

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exam Other Question

I think this is another word problem can someone help me?
(a) If you are given two sides of a triangle and the included angle, how would you find the third side?
(b)If you know
simplify each expression for the following

6x +11x =

23ab - (-2ab) =

3x + (-7x) + -10x =

7(3m) - 18 + 2m =

43 - 6(-3e) - 5e =