exam Maths Puzzle Numerical Ability

1.What is the width of a rectangle with the a perimeter of 70 feet it its length is L feet? I do not know what L feet is . Please let me know.
2. give the demensions of rectangles

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exam Other Question

Calculate the value of the discriminant of x^2 + x + 3 = 0 By examining the sign of the discriminant in the previous equation, how many x-intercepts would the graph of y = x^2 +x + 3 have? why? solve...5-9x >19+5x and 14x+9>13x-4 and last but not least w=p-21/2 solve for p...whoever will help me i highly appreciate it! Thank you