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A curve has the equation: x^4 + 2x -xy - y^3 - 10=0. Find dy/dx in terms of x and y.

We need to differentiate all values with respect to x. Therefore for the first two terms, multiply by the power and then subtract 1 from the original power. Therefore 4(x 4-1 ) + (2)(2x 2-1 ) which gives 4x ...
JG
Answered by John G. • Maths tutor
6533 Views

Energy is obtained from both aerobic and anaerobic respiration during exercise. Give three differences between aerobic and anaerobic respiration.

aerobic respiration uses oxygen for eaxaplme a relaxed human will be inhaling oxygen and their bodies using it to break down glucose in their cells. glucose + oxygen = carbon dioxide + water However anaerobi...
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Answered by Andrea G. • Biology tutor
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A conical vase of base radius 5cm and height 20cm is filled with 200ml of water, how high is the water level? Give your answer to 3 significant figures.

Answer: 2.96 cm Equations used: Volume of a cone = (base area x height) / 3 ; Base Area = pi x radius 2 Volume of whole vase = (pi x 5 2 x 20)/3 = 523.6 cm 3 (4sf) therefore Volume of air in vase with 200ml ...
IC
Answered by Ian C. • Maths tutor
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What are the different types of si clause?

There are four main types of si clause in Spanish, and they are as follows: Si + Present + Present - This is used to convey a habitual action where one action is a direct consequence of another. In all of th...
FY
Answered by Fergus Y. • Spanish tutor
5173 Views

Calculate the mass in grams of Iron (III) Chloride in a solution of 500 cm^3 which has a concentration of 0.200 mol/dm^3

First work out the moles of Iron (III) Chloride using the equation concentration = moles/volume, rearranging the eqaution in order to calculate moles gives moles = concentration x volume. Check the units!! B...
SS
Answered by Simon S. • Chemistry tutor
11607 Views