Referring the truth table in problem 6, list the wffs that are equivalent to a b. 8) referring the truth table in problem 6, list the wffs that are equivalent to the negation of a 8. 9) assign truth values to a, b, and c to prove that (a a b) v c is not equivalent to a a (b v c). c: b: a: (circle one of true or false) (aa b) v c is true or false (a a b) is true or false aa (bv c) is true or false (bv c) is true or false

The sketch shows two parallel lines cut by a transversal. angle 2 2 is 36° 36 ° . what is the measure of angle 8 8 ?

Which equation represents the function on the graph?

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?