Iforgot the third equation last time so the full question is
a+b+c=28 b=a+3 a+3+b+10c=131 i only got up to the part where i plug in the b but i don't know what to do with the other variables.

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart