Helppppp Spanish I don’t know what the stem changes in preterite when 1 or 2+ people are acting in the sentence.

Plz help! Why is the case of Marbury v. Madison significant?Select one:a. It was the last time that the U.S. Supreme Court ruled a law unconstitutional.b. It was the case that ended segregation in the United States.c. It was the case that started segregation in the United States.d. It was the first time that the U.S. Supreme Court ruled a law unconstitutional. What is the slope of a line perpendicular to the line whose equation is x-y=6 In 2000, a populationof a city is one millionpeople. If it has adoubling time of 25years, when will itspopulation reach twomillion? sociology question !!!I need one more I think to check off! How can stem cells help a patient. please help me lol. What is the answer anyone quick???? Which will most likely result if hot water is continually dumped into a stream? A. Biodiversity levels in the stream will increase.B. Dissolved-oxygen levels in the stream will decrease.C. Phosphorus levels in the stream will decrease.D. None of the above Why is meiosis important for organisms?It creates gametes and allows for genetic variation among organisms.It produces genetically identical cells.0 It provides a means of asexual reproduction.O It allows for cell and tissue repair Round 4.574 to the nearest tenth Frontal LobeParietal LobeTemporal LobeOccipital LobeZygomaticMaxillaMandibleOral CavityTracheaBronchial Tube (Left)Lung (Left)RibsLumbar VertebraeHeartStomachPancreasLiverGallbladderFibulaScapulaDuodenumlleumJejunumAscending ColonTransverse ColonCalcaneusDescending ColonAppendixKidney (Right)Ureter (Right)BladderUterusFallopian Tube (Right)Ovary (Right)Prostate GlandSpleenFemurPatellaPhalanges Which situation best illustrates the role of households in the circular flow ofgoods?A. A runner buys a new pair of athletic shoes.B. A website sells cheap books and magazines.C. A factory produces screws used to build furniture.O D. A company designs websites for big businesses. What will be the level of interest rate, i, if investment at 0 interest is $16 million and the coefficient of invest, I, equals 0.4. (C)C21H44 can be cracked to produce ethene.Cz1H44 3C2H4 + C15H32Relative formula mass (M) of C21H44 = 296Calculate the mass of C21H44 needed to produce 50.4 kg of ethene. What were Charlemagnes social contributions? Which answer option best explains how the table enhances the meaning ofthe text?Which Roller Skate Wheels Are Right for you?Several factors go into choosing a roller skate wheel. First, considerwheel material. If you're a new skater, using a soft wheel is a great wayto help you stay in control on your skates. Next, think about what kindof skating you'll be doing. Wheels with a strong grip are best for basicoutdoor skating, while wheels with less grip allow for easier movementin rhythmic and artistic skating. Finally, determine where you want toskate. For outdoor skating on asphalt, soft wheels work best, whileindoor skating on a smooth surface calls for harder wheels. Once youknow exactly what your needs are, you can choose a wheel that worksfor you. i don't know the answer pls tell me the answer Simone, buys one charger for $ 1.59 and phone popsockets $0.29 for each. She spends a total of $5.07. If there is no sales tax added to Simone totals. Which equation represents the situation? Please help. i need help. Can please thank you