20. 21. 2 3x ² - [7x- (4x-x²) + 3] x² -[-3x+ (4 - 7x)]

Q: 3.5(0.3x-1.5y)-4(0.2x-1.2y)

A: According to question,Given expression,3.50.3x - 1.5y-40.2x-1.2y

Q: 1/3+2/9

A: Given 1/3 + 2/9

Q: iGO 2. -/3 2/3 1/2

A:

Q: 3/4x20=5/6x?

A: Solution : To find the missing value of the given expression

Q: 3/8x+4=6-5/8x

A:

Q: Q3) An open-top box is to be made by cutting small congruent squares from the corners of a…

A: Let the side of the square that is cut be x inch. After cutting the squares from the corners and…

Q: 0.6(10x+19) = 2.8(0.2x + 5)

A: Determine the value of X.   The value of X is obtained by solving the given equation below as…

Q: 4^2x+7 = (1/32) ^-x+5

A:

Q: 5/4x - 3/5

A: 1) Consider the given expression,

Q: 196. 2(n+1)

A:

Q: (2x)^9(2x)^3

A: Formula used:

Q: (0.63x2 – 4.215x + 0.892) – 0.47(2x2-3x+5)

A: (0.63x2 – 4.215x + 0.892) – 0.47(2x2-3x+5)

Q: find  3/4 + 1/8

A:

Q: 8. Multiply the following: a. (x3)(x2) = b. (x7)(x10) = c. (2s4)(-6s5) = d. (-30x)(3x) =

A:

Q: x + 5 / 10 = 1/5 + x - 2 / 6

A:

Q: 1/3(12x-6)=4x-9

A: the given expression is 1312x-6=4x-9.

Q: 2/5x-1=3/10x+7

A:

Q: (4 - 2 5/6 - 5/12) x (7 1/12 - 5 3/4)

A:

Q: simplify 3(1 + x)A - x(1 + x)-2/3 83. (1 + x):/ (7 – 3x)2 +x(7 – 3x)-1/2 84. 7- 3x

A: We have to  simplify given expression.

Q: 7)^-2(4s/6t)^-2

A:

Q: 2/3(18x+15)+17

A: We have to simplyfing this

Q: 4/10 divided 1/2

A: Answer

Q: 1/3p + 7 = 25

A:

Q: (7.2) x (10^10) + (1.8) x (10^11)

A: 7.2 x (1010) + 1.8 x(1011) = 7.2 x (1010) + 1.8 x (1010) x 10 = 7.2 x (1010) + 18 x (1010)

Q: 5x + 1/4 = 61/4

A:

Q: (6.8x13) (8.5xI9 -3 -4

A:

Q: 5\4p=4/3p+5/2

A:

Q: multiply 2/3 x 9/16

A: Compute the value of 23×916 as follows. Rewrite the given expression as 23×3328 .

Q: Solve the equation. 1 5x +- 4 4 61 X = ?

A:

Q: 1/1443x+2=12x+3

A:

Q: 8log10(x-7)=16

A: Given,

Q: 5(8-x)=3x

A: First we open the bracket in the left hand side of the equation.

Q: 1/3(15x-9)-1/4(28x-3y)

A: LCM of 3(15x-9) and 4(28x-3y) is= 12(15x-9)(28x-3y)

Q: (X+6)^2=13

A: Given, (x+6)2=13 we will solve this expression for the value of x.

Q: 3/8x - 1/5x + 10 = 3/10x

A: We have to find LCD.LCM of 8,5,10=40

Q: 10(x + 3) - 5x = 14 X=

A: The given equation is 10x+3-5x=14