Si se aplica a un muelle una fuerza de 30N provocamos que se alarguen 0.2m . Calcular la constante del resorte. Y que fuerza que habra que aplicarle para que se alargue 0.45m

a lot of points plz help asap i'll pay someone to do my math Which of the following are used to document incoming 911 calls?A. Incident reportsB. Police call sheetsC. Crime reportsD. Supplemental reports calculate the volume of a liquid with a density of 5.45g/km and a mass of 65g Let f be differentiable such that f(-2)=3,f(3)=5, f'(-2)=4 and f'(3)=6. Let g be differentiable functions such that g(x)=f^-1 (x) for all x. What is the value of g'(3) help pls ok fast pls Why does the English language contain so many irregular spellings and unusual ways of forming words?O A. The English language has so few words that there's no system for regular spelling and grammarOB. The creators of the English language wanted to make it difficult to learnC. Many other languages contributed to the formation of EnglishD. There's no known reason for the irregularity of English spelling and grammar Write the y-intercept of the graph of -6x + y = 8. Pleasee hurry help me Income East and West of the Mississippi For a random sample of households in the US, we record annual household income, whether the location is east or west of the Mississippi River, and number of children. We are interested in determining whether there is a difference in average household income between those east of the Mississippi and those west of the Mississippi. Incorrect answer iconYour answer is incorrect. (a) State the null and alternative hypotheses. Your answer should be an expression composed of symbols: Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River. (b) What statistic(s) from the sample would we use to estimate the difference? Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River. Powers not given to the federal government by the U.S. Constitution are reserved to thestates and the people. This principle is established by the -First AmendmentBFourth AmendmentEighth AmendmentDtenth Amendment What tactics did jiang jieshi use in order to keep power out of the hands of the communists? he slaughtered communist party members and workers who supported them in an extermination campaign. he accepted foreign aid from western democracies and joined forces with chinese warlords. he treated peasants politely and ordered soldiers not to damage crops to win them to the nationalist side. he used guerilla or irregular hit-and-run tactics to fight the communists, forcing them to retreat to the south? Solve for t. You must write your answer in fully simplified form. 19=7t Ammonia (NH3) dissolved in water is heated in a beaker. If initially there had been 60 grams dissolved in 100 grams of water, what would happen if the temperature reached 90 and why? A. The solution would become supersaturated and the ammonia would all remain dissolved . B. The solution would become saturated but the amount of ammonia dissolved would remain the same . C. about 50 more grams of ammonia would be able to dissolve as the solution has become unsaturated . D. about 50 grams of ammonia would come out of solution as the temperature caused the solubility to decrease . Solve and show work. 1. Observa el siguiente conjunto de enteros (-1,0, 1)A. Cul de las propiedades de los nmeros reales son verdaderaspara el conjunto? find the length of xurgent pls help. If the critic rates a total of 100 movies, what is the best prediction for the number of movies she gives exactly 3 stars?27B4750D35 Which type of interest rate includes the impact of inflation? nominal interest rate compounding interest rate real interest rate simple interest rate find the length of missing side x