Using the Quadratic Formula HW Part 2 A
2
Using the Quadratic Formula HW Part 2 Name: A D iagram accu rately d raw n NOT x 20 2 x The diagram shows a trapezium. The measurements on the diagram are in centimetres. The lengths of the parallel sides are x cm and 20 cm. The height of the trapezium is 2x cm. The area of the trapezium is 400 cm 2 . (a) Show that x 2 + 20x = 400 (3) (b) Find the value of x. Give your answer correct to 3 decimal places. ..................................... (3) (Total 6 marks) Success Criteria Met? Correct substitution into the quadratic formula A
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Quadratic Equations
Transcript of Using the Quadratic Formula HW Part 2 A
Using the Quadratic Formula HW Part 2 Name:
A
D iag ram accu ra te ly d raw n
N O T
x
2 0
2 x
The diagram shows a trapezium. The measurements on the diagram are in centimetres.The lengths of the parallel sides are x cm and 20 cm.The height of the trapezium is 2x cm.
The area of the trapezium is 400 cm2.
(a) Show that
x2 + 20x = 400
(3)
(b) Find the value of x.Give your answer correct to 3 decimal places.
.....................................(3)
(Total 6 marks)
Success Criteria Met?
Correct substitution into the quadratic formulaClear chain of reasoning shownAnswers have been rounding correctly
A
