Let a=2i-4j+k and B=-3i-j+5k. Then answer the following a. a. b=

b. a×b=

c. The angle between vector a and vector b is

d. Direction cosines of vector "a"are , and ​

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18