THIS IS FOR MY TENNIS CLASS PLZ HELP ME!!!!
1. In doubles, are the players of the same nationality? Yes or No

2. If the answer is no, how do you think they got paired up with each other?

You are considering investing $1,000 in a T-bill that pays 0.05 and a risky portfolio, P, constructed with 2 risky securities, X and Y. The weights of X and Y in P are 0.60 and 0.40, respectively. X has an expected rate of return of 0.14 and variance of 0.01, and Y has an expected rate of return of 0.10 and a variance of 0.0081. If you want to form a portfolio with an expected rate of return of 0.10, what percentages of your money must you invest in the T-bill, X, and Y, respectively if you keep X and Y in the same proportions to each other as in portfolio P Which type of energy is the result when a drum is hit with a drumstick?OA. electrical energyOB. light energyOC.sound energyOD.all of theseResetSubmit Why were llamas an important part of the Chavin civilization?Llamas provided meat, milk, and wool.Llamas were considered sacred animals.The Chavin rode llamas to travel long distances.The Chavin used llamas to improve farming practices. Fragile X is not a genetic mutation.TrueFalse Read the following passage: School uniforms are an act of conformity, prohibiting students from expressing who they are and what they believe. What is the author's perspective on school uniforms? A.They are positive. B.They prevent self-expression. C.They are affordable. D.They should be banned. he Big Bang Theory suggests.... aThe universe began in an instant. bThe universe was born from clouds of dust and gas. cThe single point containing the universe exploded and the universe stretched and expanded. dGravity began to form stars and galaxies from clouds of dust and gas. eBoth A and C. fBoth B and C. gNone of the above. The core of Earth is made out of iron and nickel. The outer core's temperature is so hot that it melts the metal. The inner core is solid metal. What causes these differences?A. The outer core is is 2,2,300 300 km thick. B. The inner core is kept solid by the intense pressure of all of the layers above it.C. The inner core has a cooler temperature, allowing the metal to remain solid.D. The inner core is made of a different metal. Help!!!!!!!!!!!!!!!!!!!!!!!!!!!! PLZ HELP WILL GIVE BRAINLIST, A triangle has side lengths of (4b-6c) centimeters, (9b-d) centimeters, and (3d-c) centimeters. Which expression represents the perimeter, in centimeters, of the triangle? A player hits the ball 30% of the time. If he gets 450 chances what is the total number of times he will hit the ball Where did both Santa Fe Trail and the Oregon Trail begin? Guyssss I need your help for this question ASAPpp plz answer the question Consider the two articles you read about sea life. Jennifer Buchets Grief along the Reef is about coral reefs, and Ben Harders article The Light Brigade is about bioluminescent organisms, especially those found in the ocean.Imagine you were given the assignment to prepare a presentation on one of those articles. Locate three images that could be used in that presentation.Be sure to record the information about your sources. You will need to document them in accordance with the MLA citation format. View the MLA Style Guide. Enter the name of the article you have selected. Then copy the images into a single document and enter the citation information as required for a works-cited list. Upload the document. Name the 4 main biomes in Africa.Help PLS PLS PLS HELP!!! I'LL MARK BRAINLIEST!!! How did Americans, other than Californians, benefit from the gold rush? HELP PLEASE DUE NOW !!! 4. Rafael and Roger played tennis against each other 30 times.Each of the times they played, either Rafael won or Roger won.The ratio of the number of times Rafael won to the number of times Roger won is 7:3(a) Work out the number of times Rafael won.In a school, there are 75 girls in the tennis squad.The ratio of the number of boys in the tennis squad to the number of girls in the tennis Squad is 4:3(b) Work out the number of boys in the tennis squad. ''The British Empire was a force for good in India. How far do you agree with this statement?