1. The product of two numbers is (-4/5). If one of them is 12/25 the other number will be. (1mark)
-5/3
-3/5
5/3
3/5
2. Which of the following will lie between 0 and -1? (1mark)
0
-3
-2/3
4/3
3. If (4x+8)/(5 x+8) = 5/6 then x =?
(1mark)
4
6
8
12
4. If (x+1/x) =6 then (x²+1/x²) = ?
(2 mark)
36
38
34
36 ¾
5. Four fifth of a number is greater than three fourth of the number by 4. The number is. (2 mark)
12
64
80
102
6. The ratio of two number is 3:5 and their sum is 72 then the larger number is (1mark)
45
27
55
35
7. If x is an even number, which is the next odd number is. (1mark)
x+1
x+2
x-1
x-2
8. How old will I be after 10 years if my age before 10 years was x years
(1mark)
x+20
x-20
x+10
x-10
9. The multiplicative identity of rational number is (1mark)
0
1
2
-1
10. (x+4)(x+4)= ? (1mark)
x² +16
x²+ 4x+16
x²+8x+16
x²+16x
11. The sum of two numbers is 75. If one exceeds of the other by 15, then the smaller of the two is. (1mark)
40
35
45
25
12. What will be the factorization of x²-36. (2 mark)
(x+36)(x-36)
(x+6)(x+6)
(x+6)(x-6)
(x+6)(x-6)
13. Which of the following is the reciprocal of a reciprocal. (1mark)
-1
1
0
The number itself
14. The multiplicative inverse of 1¼ is (1mark)
5/4
4/5
-5/4
-4/5
15. When we subtract 2x²y²-3xy+4 from 4x²y² +10xy we get.
(1mark)
6x²y²-7xy+4
2x²y²+7xy-4
2x²y²-7xy+4
2x²y²+13xy-4
Answers
Answer:
First six answers i have wrote and posted.
next 9 i will answer by typing.
7) x is even number
x+1 is an odd number.
8) my present age is x
my age after 10 years is x+10
9)The multiplicative identity of rational number is 1.
10)(x+4)(x+4)= x(x+4)+4(x+4)
=x^2+4x+4x+16
= x^2+8x +16
11) Let the first number be x
x+15+x=75
2x+15=75
2x=75-15=60
2x=60
x=60/2=30
First number =30
Second number =30+15=45
12)Factorisation of x^2-36
36=6^2
=(x^2-6^2)
=the equation (a^2-b^2)=(a+b)(a-b)
=(x+6)(x-6)
13) The reciprocal of a reciprocal is the number itself.
14)1+1/4=5/4
Multiplicative inverse of 5/4 is 4/5
15)2x²y²-3xy+4 from 4x²y² +10xy we get
4x²y² +10xy
-2x²y²-3xy+4
= 2x²y²+7xy-4
HOPE MY ANSWER MIGHT HELP YOU
IF IT HELPS, PLEASE MARK ME AS BRAINLIEST!!!
