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Maths
GCSE

The equation of the line L1 is y=3x–2. The equation of the line L2 is 3y–9x+5=0. Show that these two lines are parallel.

If two lines are parallel, then they will have the same gradient. The gradient of the curve is represented by m in the equation y=mx + c. For this question, if L2 is parallel to L1, m will therefore equal...

SA
Answered by Sophie A. Maths tutor
2542 Views

Solve the equation 4(3x-2)=2x-5

4(3x-2)=2x-5
Expand the brackets: 4(3x)-4(2)=2x-5 ---> 12x-8=2x-5Collect like terms, but beware of sign changes: 12x-2x-8=-5 (subtract 2 from both sides of the equation) -----> 10x...

HR
Answered by Hibban R. Maths tutor
4784 Views

A ball of mass 10kg is dropped from a height of 50m, if the work done against drag is 500J what is the speed of the ball immediately before impact with the floor? (g=10N/Kg)

To solve this problem we will use the principle of conservation of energy. The gravitational potential energy of the ball at the maximum height must be equal to the kinetics energy at the bottom plus the ...

AR
Answered by Ali Reza N. Maths tutor
3619 Views

Solve: 2x^2 + x = x^2 - 4(x+1)

First we need to start by multiplying the brackets on the right, which will give us:2x^2 + x = x^2 - 4x - 4Then we need to move everything that is on the right to left:2x^2 + x - x^2 + 4x + 4 = 0Here a co...

RG
Answered by Rumen G. Maths tutor
2639 Views

You are given a triangle ABC with sides length AB = 20cm, BC = 100cm and angle A = 70 degrees. Find the angle of C in degrees.

Always draw a diagram first to help with clarity.Correct use of Sine Rule:sin(A)/BC = sin(C)/ABTherefore sin(C) = ABsin(A)/BC sin(C) = 20sin(70)/100 sin(C) = 0.188 (rounded to 3 Significant Figures) C = a...

AP
Answered by Arron P. Maths tutor
2649 Views

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