11 ST Revision
i)Multiply the following numbers and express in terms of a x 10k where 1 ≤a ≤ 10 and k ϵ Z:3.2 x 104 5.6 x 10-2
ii)Add them and multiply by four.
iii)Factorisex2 – 49iv)Factorise 16x2 - 9
v)Factorisex2 – 7x + 12vi)Solvex2 -7x + 12 = 0
vii)The first term of an arithmetic sequence is 8 and the common difference is 7. The nth term is 393. Find the value of n. viii)A geometric sequence has first term 2 and third term 32. Find the common Ratio. ix)Find the sum of the first 12 terms for the same sequence. x)There are 25 students in a class. 17 study French, 12 study Malay and 10 study both languages. Show this information on a Venn diagram. xi)How many study French onlyxii)Malay or French or both xiii)study neitherxiv)study one or the other but not both xv)The measurements of a length and width of a rectangular kitchen are 5.34m and 3.48m respectively. Calculate in m2 the exact area the of the kitchen. xvi)Write down both length and width correct to 1d.p.

xvii)Calculate the percentage error made if the area was calculated using the length and width correct to 1 d.p. xviii)Consider the numbers 5, , -3, , and the number sets N, Z, Q and R. Write which set each number belong in. xix)The relative frequencies of the popularity of certain brands of cleaner are displayed in the table below. Estimate the probability of someone using BRITE. Brand| Relative Frequency|

Shine| 0.34|
Brite| 0.27|
Cleano| 0.25|
No Scuff| 0.14|

xx) Estimate the probability of someone using Cleano.
xxi)If 300 people were surveyed altogether, how many preferred ‘No Scuff’? xxii)A biscuit tin contains 1 chocolate biscuit and 9 plain biscuits. A child chooses a biscuit, eats it and then chooses another. Draw a tree diagram to illustrate the outcomes. xxiii)Find the probability that both biscuits are chocolate. xxiv)Find the probability that at least one of the biscuits is plain. xxv)Shade the region (A ∪ B)...

...THE DEPARTMENT OF PSYCHOLOGY GUIDE TO WRITING RESEARCH REPORTS
The following set of guidelines provides psychology students at Essex with the basic information
for structuring and formatting reports of research in psychology. During your time here this will be
an invaluable reference. You are encouraged to refer to this document each time you write a labreport.
The writing of laboratory reports is an essential part of...

...
Lab 3 : Techniques in Microscopy
Title : Preparation of light microscope observe cell organisms.
Objective : To observe and investigate the cell structure under the light microscope.
Introduction
A microscope is an instrument used to magnify and resolve a specimen. It is important to know several important features of microscopy which involves magnification, resolution and contrast. Magnification is the enlargement of a specimen while resolution is the ability to...

...escapes out from under the vase — you might see some bubbles. When the flame goes out, the air
in the vase cools down and the cooler air contracts. The cooling air inside of the vase creates a
vacuum. - See more at: http://www.stevespanglerscience.com/lab/experiments/why-does-thewater-rise#sthash.66YmM6Iw.dpuf
Elephant toothpaste
Foam is awesome! The foam you made is special because each tiny foam bubble is filled with
oxygen. The yeast acted as a catalyst (a helper) to remove...

...LabReport
Background Information
The study of genetics and inheritance is concerned with understanding the biological properties that are passed on from parents to their offspring. By studying genetics and inheritance, plants and animals have progressed biologically which means they are more productive and in cases, have more nutrients. Also, humans who are parents can also get counseling about many human inheritable diseases.
This lab...

...
LabReport: Scientific Method
Your Name: Taylah Harness
Purpose of this Lab
What is the goal of this lab? What question is it trying to answer, or what problem is it trying to explain?
The goal for this lab is to be able to get the boiling water's temperature to increase by adding table salt. The problem it is trying to explain is, how does table salt affect the boiling temperature of water? does it increase or...

...Daphny Maldonado
Bio Lab 2107
Kiah Britton
W 10-12:30
Is H20 Bad for You?
Abstract:
In the village of Gopher Hollow there’s a cluster of Blue Baby Syndrome. There were
four infants affected by this cluster. The families from the infants would collect their
water from wells. We have to determine what’s the source of the high levels of nitrites in
the water. The four sources that could be the point of contamination are a new
subdivision, textile plant, an organic farm,...

...
Separation of Proteins and Mass Analysis Using SDS PAGE
Biology 00-01L
Abstract
This experiment consisted of separating proteins into polypeptides using a method called SDS PAGE which is a type of electrophoresis. The polypeptides had different masses, so each polypeptide traveled a different distance and this was an essential part of the lab which demonstrated that there exists a relationship between the distance...