Sean took 4 hours to travel from town a to town b at an
average speed of 70 km/h. tina took 1 hour more than sean to
complete the same journey. what was tina's average speed
for the whole journey?
/h

Write a corresponding real world problem to represent 2x - 125=400

Find the domain of the following expression: 1/(√x)-2

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y