Suppose we want to estimate household size, where a "household" is defined as people living together in the same dwelling, and sharing living accommodations. if we select students at random at an elementary school and ask them what their family size is, will this be a good measure of household size? or will our average be biased? if so, will it overestimate or underestimate the true value?

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?

Urgent? will give brainliest to the first correct answer what is the area of the figure?

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