If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population. A. TrueB. False

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times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

no i do not : ( what is it?

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.