Mathematics, 05.05.2020 13:50, dondre54

If necessary, combine like terms.
(7+x) (7 –x) =

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:00, 2002kaitlynmull

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

Answers: 2

continue

Mathematics, 21.06.2019 15:20, aliceotter2007

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Answers: 1

continue

Mathematics, 21.06.2019 18:30, leobaut6145

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Answers: 1

continue

Mathematics, 21.06.2019 18:30, ldldunker

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Answers: 1

continue

Do you know the correct answer?

If necessary, combine like terms.
(7+x) (7 –x) =...