As discussed in the text, one possible performance enhancement is to do a shift and add instead of an actual multiplication. since 9 × 6, for example, can be written (2 × 2 × 2 + 1) × 6, we can calculate 9 × 6 by shifting 6 to the left three times and then adding 6 to that result. show the best way to calculate 0 × 33 × 0 × 55 using shifts and adds/subtracts. assume both inputs are 8-bit unsigned integers.

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

Plzzz answer both questions and i will give you 100 points

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?