Top answers

Solve 7x + 5 < 3 + 2x

7x &lt; -2 + 2x5x &lt; -2x&lt; -2/5
BR
Answered by Ben R. • Maths tutor
3492 Views

Solve the following pair of simultaneous equations: 5x+2y=8 and 2x+y=7

In my opinion the easiest way of approaching simultaneous equations is to first number your equations. 5x+2y=82x+y=7This helps avoid confusion later in the working. Next choose the variable you want to solve...
EH
Answered by Emmy H. • Maths tutor
4761 Views

Find the inverse of the function f(x) =2x-7.

Step 1) Replace f(x) with y: y= 2x - 7 Step 2) Switch around the x and y values: x = 2y - 7 Step 3) Solve to find y by itself: x = 2y - 7 x +7 =2y (x+7)/2 = y Step 4) Replace y with the f(x) notation for the...
ND
Answered by Nikita D. • Maths tutor
5319 Views

Solve the simultaneous equations: 3x + y =11, 2x + y = 8

x = 3, y = 2
NB
Answered by Nathan B. • Maths tutor
3408 Views

Solve by completing the square: x^2 - 8x + 12 = 0

x 2 - 8x + 12 = 0 (x - 4) 2 - 16 + 12 = 0 (x - 4) 2 - 4 = 0 (x - 4) 2 = 4 x - 4 = +- 2 x = 6 x = 2
JV
Answered by Julianna V. • Maths tutor
4877 Views