What are all the subsets of the set?

{–1, 9}
A. empty set, {–1}, {9}
B. {–1}, {9}, {–1, 9}
C. empty set, {–1}, {9}, {–1, 9}
D. {–1}, {0}

20 points btw!!

Which of these products is positive?Select all that apply.-0.2. (12.5)-1/12.(-6 1/2)3.2.(-1/900)-32.0-4.7.(-1) Helppp please!!!!!! please do this. Write a paragraph to describe the flow of energy from the Sun to the Earth (and atmosphere) and then back into spaceAnswer the focus questions for this activity: What would be some effects on the Earth of having a balanced energy budget?What would be some effects of the Earth having an unbalanced energy budget (with more energy in than out)?What would be some effects of the Earth having an unbalanced energy budget (with more energy out than in) why was the members of the third estate so upset? pls name at least two reasons How did following the ideas of Legalism contribute to the downfall of the Qin dynasty during the reign of Emperor Si Huang?A. The emperor wasted resources on building a large army.B.The emperor was weakened because he supported fair treatment for all.C.The emperor focused on cruel punishments to enforce strict laws.D.The emperor lost influence through peaceful contacts with other kingdoms. Which piece of evidence from source 2 most conflicts with Zeke's claim thathe did all his chores?SOURCE 1: Email from Zeke Granger: I totally did all my chores,swear! I got your list at 9:00 this morning and finished by noon. Yes,know Mrs. Rodriquez saw me out cruising in the car, but that was afternoon. I had finished my chores by then, so what's the big deal?SOURCE 2 List of Chores for Zeke: 1. Clean dead leaves and sludgeout of the gutters. 2. Do laundry, separate the dark colors from thelight colors and use bleach on the whites 3 Take the tires off the carso they can be recycled (I pick them up at 4:00.) 4 Give the picketfence a fresh coat of lime green paintA) clean dead leaves and sludge out of the gutters. B) take the tires off the car so they can be recycled. C) give the picket fence a fresh coat of lime green paint. D) do Landry, separate the dark colors from.the light colors and use the bleach on the whites What is the definition of a quotient? But Kahlo was fascinated by the impetuous Rivera. In many ways they were alike. Both were outrageous pranksters and born masters of exaggeration. . . . "I began to be very interested in him, in spite of the fear I had of him," she later recalled. Frida Kahlo, Hedda GarzaWhat does this passage indicate about how the author views Rivera? Which words help indicate this attitude?--------------------------------------------------------------------------------------------------------------------------------WILL GIVE BRANLIEST!!!!!!!!! different between new born squirrel and new born mouse As a United States citizen, the requirement to serve on juries if called upon is considered which of the following? Please helpppppHow did the environments in North America affect the development ofAmerican Indian cultures in the period just before Europeans arrived?O A. Unpredictable natural disasters preventedcultures fromdeveloping on the west coast.B. Cold temperatures forced most cultures to quickly give up huntingand gatheringC. Different climates caused cultures to develop different regionallifestyles.D. Dry conditions led to wars between peoples over the bestfarmland. parts of common research paper One theme from the The Yellow Wallpaper is that a person who is not allowed to be creative can become distressed. Which sentence from the story best supports this theme? Do I just add them together? A ball moving horizontally across my desk rolls off at a velocity of 3.3 m/s. Assuming my desk is a height of 0.81 m, how long will the ball be in the air?Answer in units of seconds. Assume acceleration due to gravity is -9.81 m/s^2 What options does the President have when they receive a bill? what is the range of the following table pls ANSWER ALLL I WILL MARK BRANLIEST I NEED NOW Question 1(Multiple Choice Worth 4 points)The table below shows the right ascensions of two stars at a location.Name of star Right ascension (in hours)Star 1 5Star 2 3Which of these statements is correct about the stars? Star 1 will rise two hours before Star 2. Star 1 will rise three hours before Star 2. Star 1 will cross the meridian four hours before Star 2. Star 1 will cross the meridian seven hours before Star 2.Question 2(Multiple Choice Worth 4 points)The table below shows the right ascensions of two stars at a location.Name of star Right ascension (in hours)Star 1 1Star 2 3What is the degree difference between the two stars that cross the meridian at the location? 30 degrees 20 degrees 35 degrees 15 degreesQuestion 3(Multiple Choice Worth 4 points)A star has a declination of approximately 15. Which of these statements is correct about the star? It is 15 to the left of the celestial equator. It is 15 to the right of the celestial equator. It is 15 above the celestial equator. It is 15 below the celestial equator.Question 4(Multiple Choice Worth 4 points)A star has right ascension of 35 minutes. Which of these statements is correct about the star? It is 35 minutes to the east of zero hours right ascension. It is 35 minutes to the west of zero hours right ascension. It is 35 minutes north of the celestial equator. It is 35 minutes south of the celestial equator.Question 5(Multiple Choice Worth 4 points)The star named Polaris has a declination of approximately +90. In what direction is Polaris located from the celestial equator? East North South West Which words describe why the pharaohs built their pyramids PLEASE HURRY I DONT HAVE MUCH TIME!!!!(Ill mark brainliest)How were medieval European cities different frommodern European cities?Medieval cities were less densely populated.Medieval cities were more densely populated.Medieval cities were confined to Western Europe.Medieval cities were limited to populations of lessthan 70,000.