C. Make n subject of the formula
S= n/2 [2a + (n - 1)d]

please provide your working out

Step-by-step explanation:

Simplifying the fraction by multiplying d into the (n-1) term,

Simplifying the fraction by multiplying 2 throughout,

Multiply on both sides

Cancel the on the right hand side

Multiply s to the terms,

Move to the right hand side by subtracting on both sides

On the right hand side of the equation, take out

Divide Left hand side by ,

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!