Test: Formulae - Challenging

Double click on maths expressions to zoom
Question 1:   Find the value of x in the formula c=a x 2 +5 , if a=8 , c=7
x= 1 2 x= 1 2
x=4
x= 1 4 x= 1 4
x=2
Question 2:   Find the value of x in the formula t= x 3 + s 2 , if s= 1 2 , t=3 1 4
x=25
x=18
x=9
x=27
Question 3:   Rearrange the formula y= x1 5 +1 to make x a subject
x=4y+5
x= y1 5 +1
x=5y4
x= y 5 +1
Question 4:   Rearrange the formula y= x2 3 + x1 4 to make x a subject
x= 3 7 y+ 4 7
x=12y11
x= 7 12 y 7 11
x=1 5 7 y+1 4 7
Question 5:   Rearrange the formula p= qr q+s 1 to make q a subject
q= ( r+s ) p s
q= sr1 p
q= rs1 p
q= r p s p 1
Please note, you have solved only half of the test. For the complete test get a Must Have account. Get started