Triangles a and b are right angled. Show that the two shorter sides in triangle a have the same length as the two shorter sides in triangle B. x base id 9cm and side is 15cm y base id 9cm and side 12cm ITS ON MATHSWATCH PLS HELP

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

What is the simplified form of square root of 400 to the 100th power ?

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?