Question 21 MarkIf $x=4$, evaluate : $\frac{x^2}{2}$Answer$\frac{x^2}{2}$ $=\frac{(4)^2}{2}$ $=\frac{4 \times 4}{2}$ $=\frac{16}{2}$ $=8$View full question & answer→
Question 31 MarkExpress the following as an algebraic expression:Sum of p and 2r – s minus sum of a and 3n + 4x.Answerp + 2r – s – (a + 3n + 4x)View full question & answer→
Question 41 MarkExpress the following as an algebraic expression:The product of 12, x, y and z minus the product of 5, m and n.Answer12xyz − 5mnView full question & answer→
Question 51 MarkExpress the following as an algebraic expression:The subtraction of 5m from 3n and then adding 9p to it.Answer3n − 5m + 9pView full question & answer→
Question 61 MarkExpress the following as an algebraic expression:The product of x and y divided by m.Answer$\frac{ xy }{ m }$View full question & answer→
Question 71 MarkExpress the following as an algebraic expression:The sum of x and y minus m.Answerx + y − mView full question & answer→
Question 81 MarkWrite in the form of an algebraic expression: Surface area of a cube is six times the square of its edge.AnswerLet $S$ be the surface area and a be the edges of the cube. $S = 6a^2$View full question & answer→
Question 91 MarkWrite in the form of an algebraic expression: Area of a square is square of its side.AnswerLet $A$ be the area of the square and a be the sides of the square. $A = (a)^2$View full question & answer→
Question 101 MarkWrite in the form of an algebraic expression:Perimeter (P) of a square is four times its side.AnswerLet P be the perimeter and a be the side of the square.P = 4aView full question & answer→
Question 121 MarkWrite in the form of an algebraic expression:Perimeter (P) of a rectangle is two times the sum of its length (l) and its breadth (b).AnswerLet P be the perimeter and l be the length, and b be the breadth.P = 2 (l + b)View full question & answer→