Question

1.5 is one of the zeroes of the polynomial p (x) = 2x°-5x - 13x + 30.
2. If the coefficient of x2 and the constant term of a quadratic equation has opposite
Answer the
signs, then the quadratic equation has real roots. 7
[2 marles
3. For an AP, if Sn= 5n2-3n, then an = 10n - 8
17. Prove that
14. (tan 0 + 2) (2 tan 0 + 1) = 5 tan 0 + seca e.
(18. Use Euclid'
• Fill in the blanks by selecting the proper alternative from those given below 19. Find the ze
each statement:
between the
5. The mean of n observations is x. If the first observation is increased by 1, the GA
We 20. Solve 2x + :
second by 2 and so on, the new mean is
y = mx + 3.
A. x +n B. x + 1 P. x + + 7 D.X
6. One letter is chosen randomly from the word PROBABILITY. The probability of that 20.2 women a
V letter being a vowel is ..........
3 women an
to finish the
A. 1 B. i c. i b. 1
7. In one thousand lottery tickets, there are 50 prizes to be given. If Manish buys
21. If sin e
1 ticket, the probability of him winning a prize is
22. Evaluate : sin
a²+
A. 50
B. 1000 C100
D. 20
set
8. The solution of the pair of linear equations ajx + buy + C1 = 0 and anx + b2y + C2 = ( 22. If x sinº + y
by cross-multiplication method is given by
23. AB is a tang
b2c - b2c2 ,C2 - 2201
b, cz - b₂a,
a, c2-aci
circle at M.
a, b2 - a,b,' 9
a,b2-a2b1
a,b2-a,b,' 9 a, b₂ - azbi
A. X =
B. x =
_
cre-21-01C2
a, b₂ - Azbi' 9
42C1-acz
a, b2 - Azbi
DAX= a, b2-621
B C₂ - b₂c,
a, b2 - a, b,
y
azci-a C2
a, b₂-aab,
23 An A ABC, AH
touloh.​

Answer 1

Answer:

1.5 is one of the zeroes of the polynomial p (x) = 2x°-5x - 13x + 30.

2. If the coefficient of x2 and the constant term of a quadratic equation has opposite

Answer the

signs, then the quadratic equation has real roots. 7

[2 marles

3. For an AP, if Sn= 5n2-3n, then an = 10n - 8

17. Prove that

14. (tan 0 + 2) (2 tan 0 + 1) = 5 tan 0 + seca e.

(18. Use Euclid'

• Fill in the blanks by selecting the proper alternative from those given below 19. Find the ze

each statement:

between the

5. The mean of n observations is x. If the first observation is increased by 1, the GA

We 20. Solve 2x + :

second by 2 and so on, the new mean is

y = mx + 3.

A. x +n B. x + 1 P. x + + 7 D.X

6. One letter is chosen randomly from the word PROBABILITY. The probability of that 20.2 women a

V letter being a vowel is ..........

3 women an

to finish the

A. 1 B. i c. i b. 1

7. In one thousand lottery tickets, there are 50 prizes to be given. If Manish buys

21. If sin e

1 ticket, the probability of him winning a prize is

22. Evaluate : sin

a²+

A. 50

B. 1000 C100

D. 20

set

8. The solution of the pair of linear equations ajx + buy + C1 = 0 and anx + b2y + C2 = ( 22. If x sinº + y

by cross-multiplication method is given by

23. AB is a tang

b2c - b2c2 ,C2 - 2201

b, cz - b₂a,

a, c2-aci

circle at M.

a, b2 - a,b,' 9

a,b2-a2b1

a,b2-a,b,' 9 a, b₂ - azbi

A. X =

B. x =

_

cre-21-01C2

a, b₂ - Azbi' 9

42C1-acz

a, b2 - Azbi

DAX= a, b2-621

B C₂ - b₂c,

a, b2 - a, b,

y

azci-a C2

a, b₂-aab,

23 An A ABC, AH

touloh.