Book Maths Puzzle Algebra

The length of a certain rectangle is 10 meters greater than twice its width. If the length were doubled and the width were halved, the perimeter of the rectangle would be increased

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Book Other Question

the measure of a supplement of an angle os 8 more than 3 times the measure of a complement. find the measure of the angle. the legs of an isosceles triangle have length 4 and the base angles have measure 65 degrees. the approximate length of the base of the triangle is?