Me2moro Magazine

“WASSCE No Be Rumour”
Copy and complete the multiplication table modulo 5 on the set {1, 2, 3, and 4}
* 1 2 3 4
1 1 3
2 4 1
3 3 2
4 3 1
b). from the table
i) Solve the expression 2n × 4 = 3
ii) Find the value of n for which 2 × (3 × n) = 2
c). The function f and g are defined as: f:x ->x−2 and g:x->2x 2 −1
Solve: i. f(x)=g(-½)
ii. f(x)+g(x)=0
Solution
a).
* 1 2 3 4
1 1 2 3 4
2 2 4 1 3
3 3 1 4 2
4 4 3 2 1
b. i. Let 2n = x ii. 2 × (3 × n) = 1
x × 4 =3 2 × 1 =2
x = 2 2n = 2 n = 1 3 × n = 1
3 × 2 = 1
n = 2
c) i) g(-½) = 2(-½)² − 1 ii. f(x) + g(x) = 0
= 2 × ¼ − 1 = -½ x − 2 + 2x² − 1 = 0
f(x) = g(-½) 2x² + x - 3 = 0
x = 2 − ½ = 1½ = 1.5 (2x + 3)(x − 1) = 0
I. What is meant by dairy cattle?
ii. Give three body confirmations characteristics of dairy cattle.
b. i. Draw and label the mammalian eye.
ii. Explain how the eye focused distant objects on the retina.
x = -3/2
c. i. what is salt? Write balanced equation to show the reaction between each of the following
pairs of substances.
ii. HCL and NaoH iii) H 2
SO 4
and Cu (OH) 2
d. Explain the importance of wearing seat belts in vehicles.
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