Rearranging Equations

Area Formulas

100

area of a square 

L x B

200

Make H the subject

A = 1/2 x B x H

H = 2A/B

300

Make L the subject

A = L²

L = Sqrt[A] 

400

Make b the subject

A = ((a + b) x h)/2

b = (2A/h) - a 

500

Make r the subject

A = pi x r²

r = Sqrt[A/pi]

Money Maths

100

Make P the subject

I = P x R x T

P = I/(R x T)

200

20% of 50

10 

300

15% of 100

15

400

Make r the subject

N = ((100 - r)/100)  x O 

r = -((N/O)x100 - 100)

500

Make r the subject

A = P x (1 +  r/100)²

r = 100 x (Sqrt[A/P] - 1)

Linear Equations

100

y = mx + b make m the subject

m = (y-b)/m

200

y = x/3 -20 make x the subject 

x = 3y + 20

300

Make X the subject

Y = (X - 8)/6

X = 6Y + 8

400

Make X the subject

Y = (4X + 5)/13

X = (13Y - 5)/4

500

Make x the subject 

y = (3x - 12)/5

x =(5y +12 )/3

Temperature

100

Make C the subject

K = C + 273.15

C = K - 273.15

200

A free question

correct

300

Make C the subject

F = C x (9/5) + 32

C = (F - 32) x 5/9

400

Make F the subject

K = (F - 32) x 5/9 + 273.15

F = (K - 273.15) x 9/5 + 32

500

Make v the subject

P = (m x v²)/r

v = Sqrt[(P x r)/m]

general

100

capital of France

Paris

200

how many in a bakers dozen

13

300

days in January  February march

90

400

who is the states premier

Chris Minns

500

Capital of South Austarlia

Adelaide