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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.

5+4+3=12. 72/12=6. 3(6)=18. 4(6)=24. 5(6)=30. area of right-angled triangle = 1/2 x b x h. 1/2 x 24 x 18= 1/2 x 24 x 9. 24x9 = 216.

Answered by Rohan S. • Maths tutor

2413 Views

Jessica buys 10kg of chocolate for £20. She divides them into 500g bags which she sells for £1.30 each. Given that Jessica sells all her chocolate, what is her percentage profit?

10kg/500g= 20 bags20 bags x £1.30= £26 (money made)£26-£20= £6 (profit)(£6/£20)*100= 30% (percentage profit)

Answered by Devyani P. • Maths tutor

2428 Views

solve (5 - x)/2 = 2x - 7 to find the value of x

first you want to remove the fraction, so must multiply both sides of the equation by 2, giving: 5 - x = 4x - 14. Then you want to group all of the x's on one side, so will move x to the right where the s...

Answered by Samiyah S. • Maths tutor

7682 Views

Making up two example scenarios, explain how the subjunctive mood (Konjunktiv II) changes the meaning of the conjunction "wenn".

Example scenarios:1) Der Junge dachte sich, dass wenn er wieder laufen konnte, würde er Fussball spielen. 2) Der Junge dachte sich, dass wenn er wieder laufen könnte, würde er Fussball spielen.
The o...

Answered by Kristel Vinter K. • German tutor

1369 Views

Explain the difference between 'por' and 'para'

Uses of para: Objective (ex. Voy al supermercado para comprar mantequilla); Destination (ex. Este regalo es para tí); Time frame (in the future) (ex. Este trabajo es para el jueves); Opinion (ex. Para mí....

Answered by Chloe D. • Spanish tutor

1371 Views