Question

Q3. The angles of a supplementary pair are in the ratio 5 : 4. Find the angles.
Q3, Show that is the zero of the polynomial 2x2 + x -1.
Q3. Find the value of p(t)=123t+t+4 if
(i)t = 0 (ii) t = -1
SECTION B (2 x 3 = 6 mks)
Q4. If y = V120/12, then answer the following questions -
(i) Name the type of decimal expansion of 'y'
(10) Represent 'y on the number lines >>
Q5, If PQ | RS,ZAEF = 120 ,2BHS = 100, then find the value of 'z'.
EG
128G
HY 100
*C
SECTION C (2 X 4 = 8 mks)
Q6,{i) Rationalise the denominator:-
8/12
(ii) Express 0.72 in the form of p/q, where p and q are integers and q*0 (p and q do not
have any common factor other than one)
QZ The bisectors of ZPQR and ZPRS meet at T. Prove that LQTR = % ZQPR
V

Answer 1

Answer:

Q3. 5x + 4x = 180

9x = 180

x = 20

Answer 2

Answer:

Q6,(I) 8/12×12/12 ,. 8/12 = 2/3

(ii) let X = 0.7272...(a)

then if we multiply it by 10 we get

10X = 7.272...(b)

then if we multiply it by 100 we get

100X = 72.7272.........(c)

now on subtracting (a) from (c) :-

10X - X = 72.7272 - 0.7272

9X = 72

X = 72/9

X = 8/1