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23/01/2021
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Date: 22/10/2020
Class: Jss 3
Subject: Maths
Topic:Joint variation
Objective:The student should be able to understand the meaning of joint variation and the calculations that involve in joint variation.
Content: meaning of joint variation. The mass of a sheet of metal is proportional to both the area and the thickness of the metal. Therefore M~AT( my student please use the sign (varies )i gave you in my last class.l don't have the varies signs on my phone kindly bear with me)
For example the T°C inside a house is proportional to the outside temperature, S°C is inversely proportional to the thickness of the house walls, tcm.in this case T~S/t. This is another example of joint variation.
Example 1: x~y/z when y=7, z=3, x= 42.
a. Find the relationship between x, y and z
b. Find x when y= 5 and z= 9
Solution:
X~y/z
Thus x= ky/z where k is constant
When y= 7 and z= 3, x= 42 :.
X= ky/z
42/1= k× 7/3
Cross multiply
K×7= 42×3
7k=42×3
Divide both side by 7
7k/7= 42×3/7
7 cancelled itself now remain k.
K= 42×3/7
K= 126/7
K=18
a. The relationship between x, y and z is x= ky/z
x= 18y/z
b. Find x when y=5 and z= 9
x= ky/z.
x= 18×5/9 = 90/9 x=10.
Assignment: x~y/z, 27 when y= 9 and z= 2
a. Find the relationship between x, y, and z
b. Find x when y= 14 and z= 12.
27/10/2020
Dorato Royal International School is the best School In Nigeria where you can Learn. Dorato Royal International School is located in Lagos State.
Learn How to speak and write good English.
Learning Christian Religion Study
What is Set Theory in Mathematics?
28/09/2020
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Seminar presentation By Mr. Chorun Atsagba
http://doratoroyalschool.com/scholarship-scheme/
*Scholarship Scheme*
Dorato Royal international school instituted scholarship scheme in honour of Sola David-Borha who has contributed immensely towards the education of many students within and outside Nigeria.
Every academic year, the school management conducts scholarship examination to make it possible for at least 30 students to get quality education. Indigent students are encouraged to apply for our scholarship scheme every year. These scholarship is made possible through the generous donations of friends.
*How to Apply for the scholarship scheme*
Kindly click on this link fill the form and submit.
Our web adminstrator will send you the scholarship form through your email box.
*Procedures for enrollment*
1. Pick the scholarship form for =N= 10,000.00
2. Our prospective students/pupils will seat for entrance examination.
3. Successful candidates will be admitted.
4. Students on our scholarship scheme will only pay 1/3 of the normal schools fee till their graduation.