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First, we must find the value of y when x = 2.

y = x³+4x+5 = (2)³+4(2)+5 = 21

Then we must find the gradient of the tangent line. This can be done by d...

Within the heart the atria contract creating a high pressure and squeezing blood into the ventricles. The semi lunar valves are closed so pressure within the ventricles builds up.Pressure within the ve...

First, it should be made clear that either of these phrases can be used to mean 'for' in English. The reason we have two different words in Spanish is because they are used for slightly different purpo...

ok. Well think about a square. What times what creates the area of a square? Yes the bottom one and side on. So which do you think will be useful to know to find the area of a rectangle? Yes the same! ...

If you think of electrons as tennis balls being passed around by a circle of people, then a capacitor occurs when there is a gap between 2 people which is too large for the ball/electron to be passed o...