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Expand the brackets: (x + 5)(x - 3)?

An easy way to remember how to expand double brackets is using FOIL . FOIL stands for First , Outer , Inner , and Last . First indicates that we multiple the first two terms of each bracket (x * x = x 2 ). O...
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Answered by Daniel W. • Maths tutor
5333 Views

Calculate the interest on borrowing £40 for 3 years if the compound interest rate is 5% per year.

The method for finding compound interest is: Original Amount x Multiplier Time So, from the question we know that: Original Amount= 40, Time= 3 years, so we say 3 Next we need to work out the multiplier: The...
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Answered by Kathleen B. • Maths tutor
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How does substrate concentration affect the rate of enzyme activity?

As the concentration of substrate increases, the rate of enzyme activity increases.The optimum rate is reached at the enzymes optimum substrate concentration.The enzymes become saturated and no more substrat...
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Answered by Emily H. • Biology tutor
3431 Views

Given a material with dimensions 1.5 x 1.1 x 1.6 mm ^3 and a mass of 0.5kg. What is the density of this material? Give your answer in kg/m^3

First it’s important to check units, we notice that the dimensions are given in mm. Therefore in order to convert this to m^3 we need to multiply the volume in mm by (10^-3)^3 which gives us 2.64 x 10^-9.Nex...
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Answered by Davina V. • Maths tutor
2853 Views

Briefly explain the Lena Goldfield Strike, 1912

The Lena Goldfield Strike was triggered by a variety of factors surrounding working conditions, specifically the poor pay, long working hours and high accident rates in the gold mines. In contrast, these min...
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Answered by Michaela A. • History tutor
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