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a) Distance between two points ((x2- x1)^2 + (y2-y1)^2)^1/2Substitute in values to find distance.b) Write out l1 in vector form using info from points A and B.Use knowledge of scalar product to construct ...

Add up ratios: 2+6+7=15Divide perimeter by ratio total, to figure out how big the scale of the triangle is: 105/15=7Multiply each separate figure in the ratio by the scale factor (7): 2x7 : 6x7 : 7x714 : ...

mean: add 4,7,9,10 and 10.This gives us 40divide 40 by 5, as we have 5 numbers.40/5= 8therefore mean =8
median... if we put all the numbers in an order.. middle number- 9
mode- MOde- MOst common...

So the question asks us to add together; 2 divided by y plus 4, to 3 divided by y minus 2.As there are no common denominators (bottom half of the fraction)We will therefore have to multiple the two denomi...

divide the coefficient of the x term by 2-4/2=-2this is the value of the term, q.to find the term, y, simply square the value of q, and subtract it from the number term, which is in this case, 9(-2)^2=4. ...