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If 11 carrots weigh 170g how much would 20 carrots weigh?

170 divided by 11 is the weight of one carrot (15.45), so mulitply that by 20 (309.09) would be the weight of 20 carrots.
FS
Answered by Freya S. • Maths tutor
5290 Views

What is 'differentiation'?

Differentiating a function, f(x,t) with respect to a varible, such as x or t, tells you rate of change of the fucntion with respect to that varible. By subbing in a value for x into you differentiated functi...
CE
Answered by Charles E. • Maths tutor
3778 Views

Find the solutions of the equation 3cos(2 theta) - 5cos(theta) + 2 = 0 in the interval 0 < theta < 2pi.

3cos^2(theta) - 3sin^2(theta) - 5cos(theta) + 2 = 0 3cos^2(theta) + 3cos^2(theta) - 3 - 5cos(theta) + 2 = 0 6cos^2(theta) - 5cos(theta) - 1 = 0 delta = 25 + 24 = 49 cos(theta) = (5 - 7)/12 = -1/6 or cos(thet...
PW
Answered by Piotr W. • Maths tutor
5729 Views

I'm trying to integrate f(x)=sin(x) between 0 and 2 pi to find the area between the graph and the axis but I keep getting 0, why?

(First draw graph of sin(x) and mark 0 and pi and 2 pi) In short, you will need to split up your integral into two parts. One from 0 to pi and one from pi to 2 pi? Can you see/guess why this might be? First ...
JB
Answered by Jack B. • Maths tutor
6516 Views

How do I solve the simultaneous equations x-2y=1 and x^2-xy+y^2=1?

Depending on what you prefer, you can either substitute or you can try to solve this by elimination. I'll explain both. 1) x - 2y = 1 2) x 2 - xy +y 2 = 1 If solving by elimination, you need to start thinkin...
KS
Answered by Katerina S. • Maths tutor
14401 Views