The four corners os a rectangular city block are located at (-5,-,,9), and (9,-2) on the coordinate grid below. randy walks all the way around the block and stops when he gets back to where he started. each unit on the grid represents 10 meters. how many meters does randy walk? type the answer in the box below

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

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?

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.