An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in tall, and the initial velocity of the ball is 40 ft per sec. the height of the ball in feet is given by the equation = -2.7t(suared)+40ft+6.5, where t is the number of seconds after the ball was thrown. after how many seconds is the ball 12 ft above the moons surface?
how many seconds when it's back on the ground?

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

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step-by-step explanation:

just for that im not answering

answer:

c) the x-coordinate of the center of the circle increases by 3