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Find the first 3 terms and the sum to infinity of a geometric series with first term, 10 and common ratio 0.2

General form of a Geometric series: a + ar + ar^2 + ar^3 + ar^4 + … First three terms: 10 + 10 0.2 + 10 0.2^2 = 10 + 0.2 + 0.04Nth Term of a Geometric Series: ar^n-1 where there are n terms Proof of sum of t...
DW
Answered by Daniel W. • Maths tutor
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What is political apathy?

Political apathy is generated through feelings of disinterest or indifference towards politics and political activities. This includes civic responsibility, civic engagement, and participation in electoral p...
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Answered by Lucien B. • Politics tutor
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How does a vaccine lead to the production of antibodies and why does this provide immunity?

Vaccines are designed so that they contain antigens - for example viral antigens from the virus we wish to protect against. When these are injected they are recognised as foreign by white blood cells called ...
EJ
Answered by Emily J. • Biology tutor
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Solve the equation 5(2c -3) = 19

Firstly I would try to learn about the students abilities and maybe do an easier linear equations (without brackets) to ensure they have a basic idea how to solve these types of equations. For this questions...
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Answered by Jasmine G. • Maths tutor
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If photons are little particles emitted by atoms, where were they before they got emitted?

Eisntein showed that in his theory of relativity that energy and mass were no longer conserved, as they are in Newton's theory. This completely changes how we see particles. They are no longer fundamental bu...
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Answered by Uther S. • Physics tutor
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