Algebra 2 questions:
1. which of the following statements is true? the 2 in (a) and (d) is supposed to be i squared.
(a) i2=-1
(b) √-5=i√5
(c) √-4=2i
(d) -7•i2=7
(e) all the above
(f) none of the above

2. which is true about the complex number a+bi?
(a) a and b are both real
(b) a is real and b is imaginary
(c) a is imaginary and b is real
(d) a and b are both imaginary
(e) all of the above
(f) none of the above

Sienna planned a trapezoid-shaped garden, as shown in the drawing below. she decides to change the length of the top of the trapezoid-shaped garden from 32 ft to 24 ft. which expression finds the change in the scale factor?

Ineed in figuring out this problem.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.