The output of a continuous extruding machine that coats steel pipe with plastic was studied as a function of the thermostat temperature profile (a, at three levels), the type of plastic (b, at three levels), and the speed of the rotating screw that forces the plastic through a tube-forming die (c, at three levels). there were two replications (l = 2) at each combination of levels of the factors, yielding a total of 54 observations on output. the sums of squares were ssa = 14,144.44, ssb = 5501.27, ssc = 244,896.39, ssab = 1049.62, ssac = 62.67, ssbc = 331.67, sse = 3126.5, and sst = 270,024.33.

Which expression is rational? 6. , square root two, square root 14, square root 49

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?

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok