PQRS is a trapezium in which |PS| = 9cm, |QR| = 15cm, <PQR=90° and <QRS=30° Calculate the perimeter and area of the trapezium​

Find the value of x for which line a is parallel to line b

Write the equation in logarithmic form e^x=403.429

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]