Algebraic Formula

In which of the following, is E the subject of the formula?

• E = L ⁄ 5E
• 2E = bh
• E = mc²
• E² = u² + 2as

The area, A of trapezium ABCD is given by the formula A = ½ h (a + b).
Which of the following is true?

• h is the length of AB
• h is the length of DC
• a is the length of AB
• b is the length of DC

Find the value of 7j - 12 when j = 2.

• 2

• -2

• 5

• -5

Given T = 4k.

Make k as the subject.

• T/4

• 4T

• 4+T

• T - 4

p = r + 8.

Express r in terms of p.

• p - 8

• 8 - p

• p + 8

Given a² = 8b - 5c.

Calculate a when b = 3 and c = 3.

• 1

• 2

• 3

• 4

8/x = y

Make x as the subject.

• 8/y

• 8y

• 8 - y

• 8 + y

What is the subject for this formula?

• t

• P

• tP

• 1

What is the subject for this formula?

• p

• w

• 3

• 1

What is the subject for this formula?

• p

• a

• 2

• b