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Solve x/2 + 3x/(x+) = 1

(x/2) + 3x/(x+1) = 1x(x+1) + 6x = 2x + 2x² + x + 6x - 2x = 2x² + 5x - 2 = 0
Using the quadratic formula,
x₁ = (-5+(29)^1/2)/2x₂ = (-5-(29)

Answered by Emily D. • Maths tutor

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Show that a parallelogram is composed of an isosceles trapezium and an isosceles triangle

Draw a parallelogram composed of a trapezium and a traingle.Label:obtuse trapezium anlges as aacute trapezium angles as bbase triangular angles as ctop triangular angle as d
By definition of a parall...

Answered by Emily D. • Maths tutor

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Show that 0.81 reocurring = 9/11

Let x = 0.8181818181...
100x = 81.81818181...100x - x = 81.81818181... - 0.8181818181(100 - 1)x = 8199x = 81x = 81/99x = 9/11

Answered by Emily D. • Maths tutor

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The rectangles A and B have perimeters of 94cm and 56cm as shown below (insert diagram). Rectangle A: base = 2x cm, height = 3y cm. Rectangle B: base = (x+6)cm, height = (y+4)cm. Use an algebraic method to calculate the area of each rectangle. (8 marks)

Formulas needed: Perimeter of rectangle = 2*(base + height) Area of rectangle = base * height. Using the information given we need to define the perimeter of A and B algebraically. Rectangle A: base = 2x...

Answered by Umar Q. • Maths tutor

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How do you work out the circumference and area of a circle?

When working with circles we use which is a number that stays the same no matter how big the circle. The number starts with 3.1415.... and goes on forever, this number is programmed into the calculator, ...

Answered by Nina V. • Maths tutor

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