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"A=\\sqrt{S(S-a)(S-b)(S-c)}"

Make S the subject of the formula


Study the calendar page for August 2019 and discribe as many numbers petterns as you can find.


Polynomial and rational functions can be used to model a wide variety of phenomena of science, technology, and everyday life.

Choose one of these sectors and give an example of a polynomial or rational function modeling a situation in that sector. [Hint: see the examples and exercises in the book.]


What are the concepts of polynomial and rotational function?

What are the simplest polynomial and rotational function?

What are the Occuring fact that can be interpreted as polynomial and ratational function in day to day activities?


The parking garage at a train station offers two monthly payment plans for customers. Both plans consist of a fixed monthly cost plus an additional cost per day. Plan A charges a fixed monthly fee of R55

 plus R21

 per day. The total cost for parking under plan B for a certain number of days is given in the table below:

Number of

days parked     Cost     

(R)3

106

10

260

18

436

20

480

 

If C

 represents the total monthly parking cost of a client and n

 represents the number of times he parks his vehicle, which ONE of the following systems of equations best represents this situation?


A company may allow vending machines to be placed next to the cafeteria if 55%

 of the company’s 631

employees ask for it. If 66%

 of the required 55%

employees have already requested the vending machines, how many employees still need to put in a request?


1.find the roots of the equation: z^4+4=0 and z^4-4=0.

2.additional exercises for practice are given below.find the roots of:

2.1.z^8-16=0.

2.2.z^8+16=0.



Consider the following sets, with U = N; that is, the universal set is the setof natural numbers:A = {x | x2 = 25}, B = {x | x = n2, 1 < n < 5} ,C = {1, 3, 5, 7, 9, 11, 13,...}Which of the following is equal to A ∪ C?
A. ∅B. {5}C. {−5, 5}D. Set C

Ecologists have long known that there is a relationship between the amount of precipitation a location receives and the number of trees that grow in the area. Suppose that the relationship between yearly rainfall R (x, measured in mm) and the amount of the ground covered by trees T (y, measured on a scale from 0 to 100) is represented by the linear model T=24.70 + 0.0211R, what is the amount of the ground covered by trees that receives 1230 mm of rainfall per year?