Chapter 7
Finish off the sentence: An equation must always be balanced, whatever you do the left-hand side you must do the _____ side.
Right-hand
Special Guest Question: B.S M8B
what are the odds that a 20 sided die lands on a even number?
10/20
Which quadrant(s) on the number plane has the x-coordinate as negative?
Quadrant 2 (-x,y) & Quadrant 3 (-x,-y)
Mr G claims to be able to eat 12/18th of a whole pizza in one sitting, another student claims they can eat 50% in one sitting. Who has eaten more?
12/18 > 1/2
so Mr G is right ;)
Who won the Balon D'or (Best Footballer Award) for the Eighth time in their career this week?
'Messi Messi Messi'- IS-N M8C
Special Guest Question: I.J M8C
Solve the following Equation by first expanding any bracket
5(k+3)=30
5k+15=30
5k=15
k=3
Special Guest Question: P.S M8B
Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?
Pr (3 or 5) 9/20.
Special Guest Question: A.M M8C
When a line is horizontal what slope is it identified as?
0
Over the long weekend,12 friends from M8B go out for dinner. Altogether, they pay $110.40 for the bill. They share the cost equally. How much does each person pay?
$9.20 each
Which is the chemical name for common table salt? (Not Mum's salt)
NACl Sodium Chloride
Special Guest Question: E.W M8C
6X-2=4X+14
-2x=16
x=8
Does the following method of conducting a survey lead to bias and why?
Surveying workers from one firm within a industry about working conditions.
Yes, because other firms within that industry may have different working conditions, and therefore there maybe a change in the data collected.
What is the y-intercept from this equation? 6x + 2y = 12
(0,6)
Victoria walks 11 kilometres at a speed of 4 km/h Calculate how long it takes Victoria. Give your answer in hours and minutes.
2.75 Hours
2 Hours 45 Mins
What is the highest possible score a player can score in Bowling?
300 (Perfect Game).
Joel works at the local pizza parlor. When he works overtime he earns 1¼ times the normal rate.
One week Joel worked for 40 hours at the normal rate of pay and also worked 12 hours overtime. If Joel earned $660 altogether in that week, what is his normal rate of pay?
$40N + $(12 × 1¼N) = $660
$55N = $660
$N = $12
Special Guest Question: K.S M8B
If two coins are tossed 500 times and two heads occur 105 times, find the experimental probability, as a decimal, that the next flip will be two heads.
105/500=0.21 or 21%
Find the equation of the line that passes through the following points : (-5,10) & (-3,4)
y=-3x-5
Special Guest Question: D.A M8B
Famy Maria Joe's mother wants to make 8 curtains that each require 2 1/5 metres of material in a standard width, but she only has 16 1/4 metres. She asks Famy to buy more material. How much more material must Famy buy?
2 1/5 * 8=17.6 m
16.25m-17.6m
1.35 m is required further
Which bones are babies born without?
Kneecaps.
Fun Fact: When you’re born, your kneecap is cartilage. It doesn’t finish turning to bone until you are 4 years old.
Special Guest Question: J.M M8B:
Find the point of intersection for the following lines: y=2x+4 and y=4x-2.
(3,10)
In a class of 24 students:
12 play the piano
13 play the guitar
4 play neither
Represent this in a two-way table
Guitar 5 8
No Guitar 7 4
Special Guest Question: R.W M8C
If a + b= 29 , b + c = 45, a + c = 44
Find a + b + c = ?
2(a+b+c)=29+45+54
2(a+b+c)=118
a+b+c=59
A truck uses 4l of petrol to travel 36km. How far will it travel using 70l of petrol?
630km on 70l of petrol.
Who is the youngest recipient of the Nobel Prize?
Malala Yousafzai (17 Years Old).