Homework Answers Page 10607

• If ##tan(theta) = 3/4## and ##sin(theta) < 0##, how do you find ##cos(theta)##?

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  Geometry

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• How long is 7/10 of a mile, in feet?

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  Algebra

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• What is the additive inverse property?

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  Algebra

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• How do you write ##137.5%## as a fraction?

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  Algebra

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• How many atoms are in the universe?

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  Science

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• Why does Sodium lose an electron and attains +1 charge?

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  Chemistry

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• There are 150 calories in a cup of whole milk and only 82 in a cup of skim milk. In switching to skim milk, what is the percent decrease in number of calories?

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  Algebra

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• What is the molar mass of methane, ##CH_4##?

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  Chemistry

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• What is vant Hoff equation ?

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  Chemistry

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• What is acetylcholine classified as?

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  Psychology

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• How do I find the foci of an ellipse if its equation is ##x^2/36+y^2/64=1##?

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  Precalculus

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• Is a rectangle a parallelogram always, sometimes or never?

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  Geometry

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• What is the hybridization of H2O?

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  Chemistry

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• How can you prove that ##d/dx(cothx) = -csch^2x## using the definition ##cothx=coshx/sinhx##?

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  Calculus

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• In what order are the elements of the periodic table arranged?

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  Chemistry

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• What is the difference between alkanes, alkenes and alkynes?

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  Chemistry

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• Can someone define and list the three processes in the water cycle?

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  Environmental Science

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• How many sex chromosomes does the normal human female inherit from her mother?

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  Biology

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• How many hybrid orbitals are there in HNO3?

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  Chemistry

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• Why Polystyrene is foamy?

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  Chemistry

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• How do you convert 9/45 into a percent and decimal?

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  Algebra

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• What is an oxymoron?

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  English

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• What is the determinant of a matrix to a power?

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  Precalculus

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• What are the first, second, and third person pronouns?

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  English

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• What is the difference between a substrate, ligand, reactant and product?

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  Biology

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• How do you use mental math to find the product of 64 and 25?

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  Algebra

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• How do you find the 6 trigonometric functions for 150 degrees?

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  Geometry

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• What is 60 in scientific notation ?

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  Algebra

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• How do you solve ##tan^2x - 1 = 0##?

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  Geometry

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• Why is there more than one definition of acid–base behavior?

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  Chemistry

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• How can I find the percent compositions of N2S2?

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  Chemistry

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• How does Newton's third law relate to an egg drop?

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  Physics

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• A Nitrogen atom with 7 protons and 8 neutrons has a mass number of 15 amu. However on the periodic table, the atomic mass for Nitrogen is 14.01. How is this possible?

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  Chemistry

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• What is the cell membrane made up of?

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  Biology

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• What is the inverse cosine of 0.55?

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  Geometry

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• What is the difference between accuracy and precision?

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  Chemistry

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• How do you solve ##(1/1000)^(-1/3)##?

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  Algebra

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• What is genotype expression ?

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  Biology

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• What is the the tangent of 4pi/3 using the unit circle?

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  Geometry

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• Why is price elasticity of demand always negative?

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  Economics

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• Why do primary alkyl halides generally undergo SN2 mechanisms?

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  Chemistry

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• What is the difference between the Pythagorean Theorem and Pythagorean Triples?

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  Geometry

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• How do you express ##x^(4/3)## in simplest radical form?

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  Algebra

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• What is the standard enthalpy of the reaction CO+H2O --> CO2+H2?

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  Chemistry

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• What is the difference between divisor, dividend, nominator, and denominator?

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  Algebra

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• Why are tundra plants usually small?

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  Science

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• Is y=3x a direct variation and if so, what is the constant?

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  Algebra

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• What is the correct punctuation when I use the phrase ‘such as’ in a sentence?

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  English

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• What is the difference between enriched media and enrichment media?

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  Biology

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• What products are fomed from when ethyl propanoate an ester of relatively low molecular weight is hydrolysed by aqueous sodium hydroxide ?

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  Chemistry

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