What are materials engineers trying to discover when they study different materials?
please help im timed!

Help please ???????? If something is refined, it means that __________.A.it has broken down over timeB.it was made from things that used to be alive, like plants and animalsC.it came from beneath the surface of the earthD.it has been improved by having unwanted substances removed To manage a rental property, a property manager charges $65 per month plus 6% of the rent.If Jack pays the property manager $164 each month, what is the monthly rent on his property? Professor Burger bought a DVD player with an original price of $150 that was reduced by 20%. What was the reduced price? what is an example of a mitochondrion What was the primary political reason for establishing Catholic missions in Spanish Texas? Out of the following, who did not represent Pennsylvania at the Constitutional Convention?Thomas MifflinWilliam PennGouverneur MorrisBenjamin Franklin Suppose you have a total of $2.25 in dimes andnickels. You have twice as many dimes, as nickels.Which system of equations could be used todetermine how many of each coin you have? A purple hot-air balloon is 90 feet off the ground and rising at a rate of 7 feet per second. A yellow hot-air balloon is 120 feet off the ground and rising at a rate of 4 feet per second. Which equation could represent this situation and determine after how many seconds, s, the purple hot-air balloon will be the same height as the yellow hot-air balloon?1 point90 + 7s = 120 + 4s7s + 120 = 4s + 9090s + 7 = 120s + 411s = 210 Find three consecutive integers such that when three times the third is increased by the first, the result is 8 less than five times the second. Which of the following is FALSE?a.The Sabine Free State was land that neither Spain nor the U.S. wanted.b.The Sabine Free State was neutral territory.c.The Sabine Free State was a haven for criminals.d.The Sabine Free State was the land between the Sabine River and the Arroyo-Hondo Calcasieu line. angle a and b are supplementary angles. angle where a = 30+2x and b =x what is the measure of b degress Plz answer ASAP Ill give brainliest answer What happens with laissez-faire economic policies?A. Businesses buy out other businesses.B. The government takes a "hands off" approach to businesses.C. Businesses take over the government.D. The government actively controls local businesses. Which of the following is true about nuclear fusion?t is easy to implement.It produces less energy than nuclear fission.It produces more energy than nuclear fission.It has the ability to occur easily in everyday life. Write the quadratic equation whose roots are -6 and -4, and whose leading coefficient is 1. NEED THESE BOTH ANSWERED FAST FASTEST IS BRAINLISEST 1. The slope is 1/2 if Im wrong please correct me!!2. Whats the y-intercept B? MARKING BRAINLIEST What is needed at the beginning of sentence 42O a first-person pronounO a third-person pronounO a sequence word or phraseO a time word or phrase Which process is this? Coates' "The Case forReparations"1. Why begin this article with a quote from the Old Testament and one from John Locke?2. Why use Clyde Ross, a resident of North Lawndale in particular, to illustrate much of this article?3. Just considering housing as a topic, how does housing policy illustrate systematic racism?4. "We invoke the words of Jefferson and Lincoln because they say something about our legacy and our traditions.We do this because we recognize our links to the past - at least when they flatter us. But black history does notflatter American democracy; it chastens it.... White supremacy is not merely the work of hotheadeddemagogues, or a matter of false consciousness, but a force so fundamental to America that it is difficult toimagine the country without it." From Coates' evidence, explain this.5. What would "paying reparations" to American blacks look like to Coates?R8 Coates The Case for Reparations - The Atlantic cory.pdfLab