What is the value of x in the proportion

35*(x-1)=5*(4x+4)

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.