you hav to watch the video i don’t understand number 1 what to do help

If two data points are 10 and 20, what data point would make 30 the mean? How does Jekylls letter to Lanyon in the excerpt from The Strange Case of Dr. Jekyll and Mr. Hyde create suspense in the story?Jekyll warns Lanyon of an illness spreading in London.Jekyll fails to reveal a reason for his request.Jekyll tries to persuade Lanyon to commit a crime.Jekyll threatens to hurt Lanyon if he does not help. WILL GIVE BRAINLIEST PELASE HELPFrancisco de Quevedo y VillegasFrancisco de Quevedo y Villegas (1580-1645) fue uno de los polticos y escritores ms famosos de Espaa. El siguiente es uno de sus poemas.Mir los muros de la patria maMir los muros de la patria ma,si un tiempo fuertes, ya desmoronados,de la carrera de la edad cansados,por quien caduca ya su valenta.Salime al campo, v que el sol bebalos arroyos del hielo desatados,y del monte quejosos los ganados,que con sombras hurt su luz al daEntr en mi casa, v que amancilladade anciana habitacin era despojos;mi bculo ms corvo y menos fuerte.Vencida de la edad sent mi espaday no hall cosa en que poner los ojosque no fuese recuerdo de la muerte.Tarea: En tu opinin, de qu se trata este poema? Qu frases del poema apoyan tu opinin? Cul es tu opinin del poema?Your response must contain at least 5 detailed and complete sentences in Spanish. You will be graded on (a) appropriate use of grammar and vocabulary, (b) completeness and detail of the response, and (c) overall quality of the response. Why didn't President Van Buren want to annex Texas? whats the study of human populayion PLEASE WRITE THE MEANING OF CINCO DE MAYO, HOW IT CAME TO BE AND HOW IT IS CELEBRATED I need your help with this haha 3. The school library has 475 books.If the librarian buys 12 books amonth for 5 months, how manybooks will the school have then! Write an expression for "the quotient of 9 andC What kind of waves do light waves travel in and how do they move Can someone help me with this? Simplify the expression. Write your answer using decimals. Put me out of my misery! Help me! If possible could you show me how to do this? If f(x)=2x+5 , determine the value of f(3x) . How long will it be before the moon will be too far away from Earth to totally cover the sun after a solar eclipse? Why is conflict so hard to resolve How the dorsal/ventral pattern is initially established in drosophila development Sort each characteristic under the type of market it describes.little freedom of choiceTraditionalCommandMarkettrading and farmingsupply and demandroom for competitionstrong government controlrural or developing worldDoneIntro *60 POINTS + BRAINLIEST*An electronics store is offering a discount of 10% on all items. Rebecca wants to purchase a television priced at $460. The store will deduct the discount and then add sales tax of 6% to the discounted price. How much will Rebecca pay for the television? Write your answer in dollars and cents. The scope of a variable is __________________A. it is not possible to determine the scope of a variable in PythonB. all variables are available throughout the programC. where it can be read or modifiedD. before it is declared