What equation represents the nth term of the sequence {2, -1, -4, -7, ...}help me PLEAS

Can (2,3 and square root 10) be sides ona right triangle?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

20 ! jason orders a data set from least to greatest. complete the sentence by selecting the correct word from each drop-down menu. the middle value of the data set is a measure and is called the part a: center b: spread part b: mean a: mean absolute deviation b: median c: range