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The nth term of a sequence is 8(2^n + 2^(6n-7)). a) Without a calculator, find the 2nd term of this sequence, b)​​​​​​​ Express the formula in the form 2^x + 2^y

To find a) just plug in the number two to all places where n appears. In this case 8(2^2 + 2^(6 * 2 - 7))  and then number crunch. 8(4+2^5) -> 8 * (4 + 32) -> 8 * 36= 288.

To find part b, we ...

TP
Answered by Tom P. Maths tutor
4447 Views

Simplify fully: (7x^2 - 21x)/(x^2 + 2x - 15)

This one is quite complicated to answer typed up like this and i would definitley use a white board Show that 7x^2 - 21x can be come x(7x-21) which can in turn become 7x(x-3) Show that x^2 + 2x - 15 can b...

DG
Answered by Dominic G. Maths tutor
4926 Views

What are the enzymes involved in the process of DNA replication?

DNA Helicase - unwinds and unzips the DNA double helix by breaking the hydrogen bonds DNA Gyrase - this helps to stabilise the single strands Single-Strand Bindin...

DG
Answered by Dominic G. Biology tutor
10673 Views

Define how recursion works

Recusion works by creating a method which is defined in terms of itself. This effectively means that the method will make method calls to itself. It makes these calls using increasingly reduced problem si...

MK
1622 Views

How do I write a good hypothesis?

Assuming that you already have a topic for the research (e.g a description of an experiement or study), the first thing to think about is what that research is trying to find out. In other words, what is ...

SA
Answered by Steph A. Psychology tutor
4287 Views

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