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We have two straight lines AB and CD. The coordinates of A,B and C are A(1,3), B(5,9) and C(0,8). The point D lies on the line AB and is halfway between points A and B. Is the line CD perpendicular to AB?

First of all we need to find the coordinates of the point D. As D is halfway between the two points A and B, to find the midpoint of a line segment, we add the x coordinates then divide by 2, and add the ...

BH
Answered by Bryony H. Maths tutor
6238 Views

Expliquez la différence entre le COD et le COI

Le COD, ou complément d’objet directe désigne l’objet d’une action. Il n’est pas précédé par une préposition
Pour le trouver il faut répondre a la question ...

TM
Answered by Tamara M. French tutor
3758 Views

What does it mean for an argument to be valid?

An argument is valid if and only if the following is impossible: all of the premises are true and the conclusion is false. E.g. the argument below is valid:(1) All men are mortal(2) Socra...

OH
Answered by Oliver H. Philosophy tutor
2077 Views

Kevser buys 5kg of sweets for £10. She separates the sweets so that there are 250g of sweets in each bag. She sells each bag for 65p. She sells all bags. What is her percentage profit?

1kg = 1000grams 5kg = 5000 grams. 5kg will give 20 bags (5000/250). Total amount she will make from selling is £13. Hence, profit percentage is (13-10)/10*100. Which gives profit percentage since profit i...

KT
Answered by Kevser T. Maths tutor
3519 Views

The equation of a straight line is 3x + 2y = 24. Find where the line crosses the x-axis.

Let's first think about what it means when the line crosses the x-axis. If we consider a normal x-y coordinate plane, every point on the x-axis has a y value of 0. So if we are trying to find out where th...

AD
Answered by Angela D. Maths tutor
7290 Views

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