what ive learned about heat,sound and light​

a.a grave shipb.a warshipc.for cargod.none of these How many solutions exist for the system of equations below?Answer Choices:noneonetwoinfinitely many A synonym for rampant -- quicklytrue or false Ryan's take-home pay is $2,500 each month. The amount for gas is $125. Calculate the percentage Ryan uses on gas from his take-home pay. please help!! O^O What happens if the bill is not signed by midnight?a.its too latec.it will become a lawb.there is an extension grantedd.none of these Item 8After Lenin, who ruled the Soviet Union as a ruthless dictator?Kaiser WilhelmJohn McCraeNicholas IIJoseph Stalin louise decided to purchase a new mountain bike when he saw the sporting good store was offering 20% off their bike. what is the total cost of the mountain bike if the originally price at $249 and louise must pay 7.5% sales tax Fill in the blanks! Completa las frases con la forma correcta del imperfecto o del pretrito.6.Yo ________________________(asistir) a la escuela hasta que __________________(tener) diecisiete aos.7.___________________(ser) las ocho cuando Alejandro __________________(llegar)8.Yo ______________________(empezar) un nuevo trabajo ayer. ____________________ (estudiar) por cuatro aos para prepararme. Hace dos aos ___________________________. (graduarse).9.Y vosotros? _________________________(estudiar) por seis aos?11.Mientras yo _____________________(leer) Marta _____________________(apuntar) las cifras.12.Elisa __________________________(lucir - to shine /make an impression) un vestido elegante y ___________________(ser) la chica ms bonita de la clase.13.Yo _________________________(pensar) que no _________________(ir) a llover. Which of the following was true for Serfs living in Medieval times? Select all that applythey provided food in exchange for protectionthey were free peoplethey did not own propertythey were the majority of the people at that timetheir position in society was inherited by birththey lived in the manor of their lord but were able to come and go as they pleased What season is the Northern Hemisphere experiencing?O springO winterO autumnO summer Which expression shows 3 decreased by the sum of 11 and a number? A. 3-(11+x) B. (11+x)-3 C. 3-11+x D. 3+11x What would happen to a vascular plant if there were not structures to move the materials throughout the plant? The first sequence rule is multiply by 2 starting from 7. The second sequence rule is add 2 starting from 8. What is the first number that appears in both sequences?Question 3 options:10141828 WILL MARK BRAINLESTExplain one way that you could lower the amount of trash that your family produces. Be specific in your example. Explain how it will actually lead to a lower amount of trash Write out the algebraic expression given in each written expression.16 subtracted from the sum of 48 and bequals 129A ( 16 - b) + 48 = 129B (48 + b ) - 16 = 129C.16 - (48 + b ) = 129D 48 +(b - 16 ) = 129 how are public policy andpublic opinion are related. Please answer plzzzzzzzzzzz A line is perpendicular to y = - x - 2 and intersects the point (-5, 10) Philosophy: The Big Picture Unit 8Would an existentialist argue that the study of philosophy was a good use of a life?A. Yes, if society valued the results of the study.B. Yes, but only if the individual found it meaningful.C. No, a life should be spent minimizing the role of anxiety.D. No, there is no way that philosophy could create a meaningful life. The songs of birds are part of a ritual to attractpotential partners of their own species. The song presents specific patterns recognized only by membersof the same species. What advantage does this present for the species of birds?