Answer i need it badly and i don't understand any of this. fabio and gwen are saving money to buy a new gaming station. they need at least $510 to purchase the new gaming station. gwen weeds yards and fabio walks dogs to raise money. gwen charges $12 each time she weeds a yard and fabio charges $9 each time he walks a dog. the number of dog walks that fabio has scheduled is no more than twice the number of yards gwen has scheduled to weed. fabio will walk at least 25 dogs. write a set of constraints to model the problem, with x representing the number of lawns weeded and y representing the number of dogs walked. show the work.

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

In a sample of 2023 u. s. adults, 373 said franklin roosevelt was the best president since world war ii. two u. s. adults are selected at random from the population of all u. s. adults without replacement. assuming the sample is representative of all u. s. adults, complete parts (a) through (d). (a) find the probability that both adults say franklin roosevelt was the best president since world war ii. the probability that both adults say franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (b) find the probability that neither adult says franklin roosevelt was the best president since world war ii. the probability that neither adult says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (c) find the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii. the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (d) which of the events can be considered unusual? explain. select all that apply. the event in part left parenthesis a right parenthesis is unusual because its probability is less than or equal to 0.05. the event in part (b) is unusual because its probability is less than or equal to 0.05. none of these events are unusual. the event in part (c) is unusual because its probability is less than or equal to 0.05.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?