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Making x the subject means we must rearrange the equation to get it into the form 'x='First, we need to get all the x's on one side; to do so, we will subtract 2x from each side to give 2x+7-2x=5x-2x. Thi...

From the binomial theorem we know that the x^3 term in the expansion of the above expression must satisfy,
4C3 * (3x)^3 * a = 216x^3.
Hence, after multiplying out we must have,
108a * x^...

Atomic number = the number of protons per atom of this isotopeMass number = total number of protons + neutrons per atom
Therefore, an atom of this isotope has 7 protons and 15-7=8 neutrons.
As ...

Firstly, we can put the values given in the question into our equation.v² = 2w - x²Goes to ...v² = 2(40) - (4)²After we do the multiplication and indices, the e...

Arranged in different hexagonal layers, strong covalent bonds exist between carbon atoms, requiring lots of energy input in order to break. However, only weak inter-molecular forces exist between the diff...