Questions and answers by

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Questions (187)

Use the equation to answer the question.CH4+2O2→CO2+H2O Which statement describes why this chemical equation is not correct?
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How many atoms of carbon (C) are present in the reactants of the following chemical equation?C7H16+O2→CO2+H2O (1 point)
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QuestionWhich of the following equations shows a chemical change?(1 point) Responses C2H5OH(l)→C2H5OH(g) C 2 H 5 O H, which is
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Use the table to answer the question.Reaction Bonds Present Energy of Bonds Broken and Formed (kJ/mol) C + O2→CO2 O=O 2 C=O
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Use the information in the table to answer the question.Bond Bond Energy (kJ/mol ) H–Cl 427 Cl–Cl 242 H–H 435 Hydrogen and
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Use the information in the table to answer the question.Bond Bond Energy ( kJ/mol ) H-I 297 H-H 435 I-I 151 Hydrogen and iodine
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Which fact must be true if a relationship is endothermic?(1 point)Responses The energy of each bond on the reactant side is
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Which statement explains the relationship between the amount of energy it takes to break a bond and the amount of energy
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Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown.2HBr → H2 + Br2 The energy of the
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When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The
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How is total reaction energy calculated?(1 point)Responses reactant bond energy + product bond energy reactant bond energy +
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Which event is an example of an endothermic reaction?(1 point)Responses photosynthesis photosynthesis burning wood burning wood
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Which result occurs during an exothermic reaction?(1 point)Responses Heat is released into the environment, while light is
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Character Development Quick Check5 of 55 of 5 Items Feature The Crow-Child by Mary Mapes Dodge Midway between a certain blue
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Character Development Quick Check4 of 54 of 5 Items Feature The Crow-Child by Mary Mapes Dodge Midway between a certain blue
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What is a complex character?(1 point)Responses a character with multiple qualities, traits, and motivations who changes over the
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Setting Quick Check5 of 55 of 5 Items Feature Big Water by Andrea Curtis What I should be, really, is frightened. Everything
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Why do authors introduce subplots?(1 point)Responses to appeal to readers who enjoy different things to appeal to readers who
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What is a flashback?(1 point)Responses a scene that interrupts the story’s chronological flow to tell events from the past a
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What is the theme of a story?(1 point)Responses the main events that take place the main events that take place the central or
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How can readers best determine the theme of a story? Select the two correct answers.(1 point)Responses by analyzing story
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What is the origin of the phrase caveat emptor?(1 point)Responses Latin Latin English English Spanish Spanish French
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What is a word’s connotation?(1 point)Responses the literal meaning of the word the literal meaning of the word a word that
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Use the paragraph to answer the question.We heard racket about there being mysteries behind these gates, but sauntering up to
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Literary Text Evidence Quick Check5 of 55 of 5 Items Feature Big Water by Andrea Curtis Henry and Eva fold the sails and get out
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What is textual evidence?(1 point)Responses information in a text that support an idea or analysis information in a text that
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Los alumnos llevan útiles escolares en sus mochilas a la escuela. En la pizarra, hay un cartel con las reglas del salón. El
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Dr. Molina and his colleagues discovered that some man-made compounds were depleting the _______.(1 point) Responses Earth Earth
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Use the image to answer the question.A Cartesian coordinate plane's axes range from negative 4 to 4, both by 1-unit increments.
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Which of the following points shows a solution to the simultaneous inequalities y>12x+5and y<−2x+1 ?(1 point) Responses (4,8)
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Use the image to answer the question.A Cartesian coordinate plane's axes range from negative 4 to 4, both by 1-unit increments.
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Determine if the point (3,8)is a solution to the simultaneous inequalities y>x+5 and y≤6x−3 . Select the response that gives
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Use the elimination method to solve the linear-quadratic system y=x2−2x−2, y=2x−6 .(1 point) Responses (2,−2) and
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Use the elimination method to solve the linear-quadratic system y=x2+10, y=−7x−2 .(1 point) Responses (−3,19) left
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Solve the following system of equations using the elimination method.3x−4y=−4 , x+3y=−10 (1 point) Responses (−16,−2)
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Use the table to answer the question.System A System B 7x+4y=−4 5x+8y=28 7x+4y=−4 ? Which of the following terms will make
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Use the table to answer the question.System A System B −x+y=1 x+y=11 x+y=11 ? Which of the following shows the equation that
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Use the substitution method to find the solutions to the linear-quadratic system y=x2−x−40, y=−3x−5 ?(1 point) Responses
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Which of the following uses the substitution method to solve linear-quadratic system y=x2−4x+8, y=3x−4 ?(1 point) Responses
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Use the substitution method to solve the system 2.5x+y=−2, 3x+2y=0 .(1 point) Responses infinite solutions infinite solutions
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Use the substitution method to solve the system x=y−4, x+8y=2 .(1 point) Responses infinite solutions infinite solutions
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Use the substitution method to solve the system 2x+3y=4, −4x−6y=−8 .(1 point) Responses (−1,2) left parenthesis negative
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The graph shows the equation y=x+2in red and the equation y=x2 in blue. Which of the following shows the solution(s) for this
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The graph shows the equation y=13x−2in red and the equation y=−x+2 in blue. (2 points) What ordered pair is the solution of
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Select the inequality that is represented by the blue region of the graph.(1 point) Responses y≤3x−1 y is less than or equal
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Iris wants to start saving money for new headphones. She starts with $44 already saved and decides to save an additional $15 per
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An ordered pair is always written (x,y). Which ordered pair is a solution to the equation 5x+4y=6 ? (1 point) Responses (−2,1)
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Use the image to answer the question.The x- and y- axes of a coordinate plane range from 0 to 30 and 0 to 20 in increments of 5
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Show which of the following points is part of the solution set for the inequality y≤25x+1.(1 point) Responses (10,4) left
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Which of the following points is a solution to the linear inequality y>19x−29?(1 point) Responses (0,−13) left parenthesis 0
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Cindy won $50.00 for getting first place in the Science Fair. She spent her winnings on robotics kits and chemistry sets. Each
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Which of the following options could use both intercepts to produce viable solutions? (1 point)Responses (years of experience,
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For a large group of students, the Boston Ballet charges a flat rate of $50.00, plus $15.00 per ticket. How much would a school
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Use the image to answer the question.A graph shows both the x-axis and y-axis, ranging from negative 10 to 10 in increments of
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Use the image to answer the question.A graph shows both the x-axis and y-axis, ranging from negative 10 to 10 in increments of
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Select the option below that correctly shows which of the following ordered pairs is part of the solution set for the equation
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The math teacher asked his students to determine a solution for 1.5x−2y=8. Which solution below is the correct one?(1 point)
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Determine which of the following ordered pairs is a solution to the equation 3x−8=−4y.(1 point) Responses (−1,1) left
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The manner in which a nation allocates its limited resources and distributes goods and services is called a(n):(1 point)
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In the United States, most of the goods and services we purchase are produced by companies in the portion of the economy that is
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What term can be used to describe ‘limited resources’?(1 point) Responses supply supply elastic elastic competition
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Which of these courses would a Mexican high school student have the chance to take on a Saturday?(1 point) Responses English
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Which Latin American artist or writer believed all art should be public?(1 point) Responses Diego Rivera Diego Rivera David
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What are students in public school in Puerto Rico required to wear?(1 point) Responses hats hats scarves scarves uniforms
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Which of the following describes an effect of migration?(1 point)Responses Economic benefits are only felt by the receiving
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Which of the following statements correctly synthesizes two migration scales?(1 point)Responses A population census is only
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Analyze the migration occurring in the Central American counties of Honduras, Guatemala, and El Salvador. Which push or pull
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In the past year, which of the following is true about remittances?(1 point)Responses Remittances decreased due to the switch
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Analyze the following scenario. Which of the following statements is true?“In the past year, the U.S. Government has rolled
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The Industrial Revolution created migration due to which factors?(1 point)Responses economic factors economic factors political
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Which answer accurately describes an environmental pull factor?(1 point)Responses migrating to live in a warm coastal region
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What is the total number of migrants present in a country called?(1 point)Responses immigrant immigrant pull factor pull factor
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Analyze the factor present in the following scenario of migration.James lives near the coast. While the climate is warm and near
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Use the quote to answer the question.“When we went to sleep at night, we were afraid we wouldn’t wake up the next morning
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Classify the type of migration that occurs when an individual is forced to leave their home due to the threat of violence and
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Using your understanding of how to analyze population pyramids, which analysis of a stationary population pyramid is correct? (1
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Which of the following is an example of a demographic factor that is commonly used to examine change in total population over
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Evaluate the following population statistics to choose the one to best determine where to post advertisements for a job fair.(1
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In the decomposition of water, why is twice as much hydrogen as oxygen formed?(1 point)Responses There are two atoms of hydrogen
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Which statement correctly describes the classification of chemical reactions into different categories?(1 point)Responses All
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Which statement best analyzes an effect of colonization on sub-Saharan African culture?(1 point)Responses An effect of
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Which of the following statements analyzes a cultural difference between Cambodia and Singapore?(1 point)Responses Cambodia and
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Which statement best summarizes some of the major cultural characteristics of eastern Europe?(1 point)Responses In eastern
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Which statement best summarizes the contributions of Black Americans to music in North America?(1 point)Responses Black
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How would you ask, “Who has Spanish class?” in Spanish?(1 point) Responses ¿Quién habla español? ¿Quién habla español?
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Graph x>11.(1 point)Responses A number line ranges from 5 to 15 in increments of 1. A closed point is plotted at 11. An arrow
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Use the image to answer the question.A number line ranges from negative 12 to 0 in increments of 1. A closed point is plotted at
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