Premises:
if a quadrilateral has opposite sides that are parallel, then it is a parallelogram.
a rhombus is a quadrilateral where the opposite sides are parallel.
conclusion:
a rhombus is a parallelogram.
which statement best describes this argument?

the argument is invalid because the conclusion does not follow the premises.

the argument is invalid because the premises are not true.

the argument is valid by the law of detachment.

the argument is valid by the law of syllogism.

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.