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Solve this inequality 4y - 3 ≥ 5

1 - We treat an inequality sign like an equals sign (unless we divide by a negative number). 2 - Rearrange the inequality to get all the ys on one side and all the numbers on the other side. 3 - Simplify to ...
GA
Answered by Gadah A. • Maths tutor
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Solve 5x - 2= 3x + 7

1 - First we need to get all the x values on one side and all the numbers on the otherside of the equals sign. 2 - We then need simplify the equation to get 1 x. Solve 5x - 2= 3x + 7 1 - Remember, whatever y...
GA
Answered by Gadah A. • Maths tutor
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Find the equation of the tangent to the curve y=x^3-4x^2+2 at the point (3,-7)

y=x 3 -4x 2 +2A tangent to a curve at a specific point along the line will have excatly the same gradient as the curve at that point. For example if the point was (0,0) the tangent would just be a horizontal...
DW
Answered by Daniel W. • Maths tutor
25201 Views

Factorise 2b^2 + 6b

1 - We first need to find a common factor, something that is the same in both parts of the expression. 2 - Then we need to take this out of the expression by dividing both parts of the expression by the comm...
GA
Answered by Gadah A. • Maths tutor
8285 Views

A sample of pure gold has a density of 19300 kgm^-3. If the density of a gold nucleus is 1.47x10^17Kgm^-3, discuss what this implies about the structure of the gold atom. [4 marks]

To gain all of the marks, 4 different points must be made. To begin, state what is obvious: The density of the gold nucleus is much greater than the density of the gold atom. The next step is to discuss what...
RL
Answered by Rebecca L. • Physics tutor
11670 Views