Use the power of a power property to simplify the numeric expression. (9^1/4)^7/2

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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.

Someone me what is the area of this figure? 18m 18m 8m 16m