Which expression is equivalent to (8.4x+2.9)+(−3.7x+5)? Will give brainliest for the best answer & explanation!

A
−4.7x+7.9

B
4.7x+7.9

C
−12.1x+7.9

D
12.1x+7.9

Which are factor pairs of 350? choose all answers that are correct. a) 30 and 12 b) 35 and 10 c) 70 and 5 d) 2 and 125

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?