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Maths
GCSE

Make y the subject of the formula 3y-p=h(2+y)

3y-p=h(2+y)

3y-p=2h+hy

3y-hy=2h+p

y(3-h)=2h+p

y=(2h+p)/(3-h)

YC
Answered by Yuko C. Maths tutor
3819 Views

If angle x = 63 degrees, work out the remaining angle of this right-angled triangle

All angles in a triangle add up to 180 degrees. In a right angled triangle, we know one angle is 90 degrees. In the question, it is given that another angle is 63 degrees. So the remaining angle must be 1...

RL
Answered by Rebekah L. Maths tutor
5818 Views

Convert 0.2m^2 to mm^2

We know that 1m=1000mm

Therefore 1m^2= 1000^2 mm^2

Since 1/0.2=5 

1000^2 / 5= Answer

LF
Answered by Lucas F. Maths tutor
3998 Views

If a line is in the form y=mx+c why does m give you the gradient of the line

gradient is change in y over change in x.

if (x1,y1) and (x2,x1) are lines on a graph then the change in y is y2-y1 and change in x is x2-x1, and since they are both on the line y1=mx1+c and y2=mx2...

VB
Answered by Vedant B. Maths tutor
4046 Views

V= 4(h^3 +1)^0.5 - 4, find dv/dh when h=2

V= 4(h3+1)0.5- 4 dV/dh= (4x 0.5) x 3h2 x (h3+1)-0.5  =>  6h2(h3+1)-0.5 Substitute h=2 into dV/dh   => (6x2

OD
Answered by Oliver D. Maths tutor
4731 Views

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