Question

Plz solve all the questions-

3)Solve the following equalities/inequalities:
a)9x+45=4x
b)45+x<2x
c)15+4x>-1


4)Carry out the given operations in each case:
a)add(5x^2-3x+8) and (-x-9x-3)
b)subtract (8x+4) from (5x^3-4x)
c)multiply -2 with (12x^2-2x+1)

5)what value of a satisfies each of the following equations-
a)7a-5=9
b)10a+7=30

6)three more than five times a number gives thirteen.Find the number.

7)Three consecutive numbers add up to 48.What are the three numbers.

8)Add the terms:
a)3x and 6x
b)15xy and xy

9)Use any of the given variables and constants to form them:
x 4 y 15 z 2 a 8 b
a) A polymonial with three terms
b)A monomial
c) A binomial

10)Multipy each of the following polynomials with the constant -4
a)6xy-8
b)4x^2+9x-5

Answer 1

8) a)3x+6x=9x
b) 15xy+xy=16xy

5) a) 7a-5=9
7a=9+5
7a=14
a=7/14
a=2
b) 10a+7=30
10a=30-7
10a=23
a=23/10
a=2.3
3) a) 9x+45=4x
45=4x-9x
45=-5x
x=45/(-5)
x=-9
inequality
b) 45+x<2x
45=2x-x
45=x
inequality
c) 15+4x>-1
4x=-1-15
4x=-16
x=-16/4
x=-4
equality