RevisiunPprs Excel in Mathematics- Grade 10 Form 4 Velleybal (a) By u pur class 2. (a) Factorise completely (1) 10- S (1) kr - 2- 3r+ 6, (i) 4r- 12ay + 9y In Answer: (a) (1) (i) (iii) (b) The dimensions of a rectangle are (3x + 1) cm and (x- 1) cm. The length of each side of a square is (x + 3) cm. 121 X- 1 x+3 3x + 1 X +3 (i) Given that the rectangle and the square have the same area, show that x - 4x - 5 = 0. (ii) Solve the equation x-4x-5= 0. (iii) Find the perimeter of the rectangle. 131 EES
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
![Excel in Mathematics - Grade 10 Form 4)
RevisionPns
Man
2. (a) Factorise completely
(1) 10-5
(i1) kr- 2-3r+ 6,
(i) 4r- 12xy + 9y
Im a class
volleyball
(2) By us
and
Answer: (a) (1)
(ii)
(iii).
(b) The dimensions of a rectangle are (3x + 1) cm and (x - 1) cm.
The length of each side of a square is (x + 3) cm.
121
X- 1
x+3
3x + 1
(i) Given that the rectangle and the square have the same area, show that
*- 4x - 5 = 0.
*+ 3
(ii) Solve the equation x-4x-5= 0.
(iii) Find the perimeter of the rectangle.
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