Math ? *i think it's b but i just want to make sure*

what is the unit vector of: v: < -6, -8> ?

a. < ⅗, ⅘ >
b. < -⅗, -⅘ >
c. < ⅘, ⅗ >
d. < -⅘, -⅗ >

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )

Can someone me and explain..will award brainlest!