Which of the following statements are true?

i. the area under a normal curve is always equal to 1, no matter what the mean and standard deviation are.
ii. the smaller the standard deviation of a normal curve is, the higher and narrower the graph.
iii. normal curves with different means are centered around different numbers.

a. i and ii
b. i and iii
c. ii and iii
d. i, ii, and iii
e. none of the above

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Find the ratios of the corresponding sides